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Bird List

Updated ~2 days ago
395 All Years 253 This Year 2024 109 This Month Jun 2024
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  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (394)

  1. Snow Goose Anser caerulescens
    # Count: 1
    Date:
    Observer: Narca Moore
    Location: Union Reservoir
  2. Ross's Goose Anser rossii
    # Count: 4
    Date:
    Observer: Alex Cruz Jr 🦤
    Location: Poudre Ponds
  3. Greater White-fronted Goose Anser albifrons
    # Count: 1
    Date:
    Observer: Alex Cruz Jr 🦤
    Location: Poudre Ponds
  4. Pink-footed Goose Anser brachyrhynchus
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Idaho Creek Open Space
  5. Brant Branta bernicla
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Greeley
  6. Barnacle Goose Branta leucopsis
    # Count: 1
    Date:
    Observer: Charlie Chase
    Location: Milavec Lake, Frederick US-CO (40.1214,-104.9461)
  7. Cackling Goose Branta hutchinsii
    # Count: X
    Date:
    Observer: David Ely
    Location: Woods Lake
  8. Canada Goose Branta canadensis
    # Count: 8
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  9. Trumpeter Swan Cygnus buccinator
    # Count: 1
    Date:
    Observer: Jeff Buecking
    Location: LUNA Reservoir
  10. Tundra Swan Cygnus columbianus
    # Count: 1
    Date:
    Observer: John Vanderpoel
    Location: Union Reservoir
  11. Wood Duck Aix sponsa
    # Count: X
    Date:
    Observer: Ron Wagner
    Location: Lower Latham Reservoir area
  12. Blue-winged Teal Spatula discors
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Lower Latham Reservoir area
  13. Cinnamon Teal Spatula cyanoptera
    # Count: 2
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  14. Northern Shoveler Spatula clypeata
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Horse Creek Reservoir (Weld Co side)
  15. Gadwall Mareca strepera
    # Count: 55
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  16. Eurasian Wigeon Mareca penelope
    # Count: 1
    Date:
    Observer: Doug Ward
    Location: Lower Latham Reservoir area
  17. American Wigeon Mareca americana
    # Count: 4
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  18. Mallard Anas platyrhynchos
    # Count: 40
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  19. Mexican Duck Anas diazi
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Firestone Gravel Pits (view from road)
  20. American Black Duck Anas rubripes
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Windsor
  21. Northern Pintail Anas acuta
    # Count: 25
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  22. Green-winged Teal Anas crecca
    # Count: 5
    Date:
    Observer: Hugh Kingery
    Location: Union Reservoir
  23. Canvasback Aythya valisineria
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Sautcy Lake
  24. Redhead Aythya americana
    # Count: 10
    Date:
    Observer: Van Remsen
    Location: Horse Creek Reservoir (Weld Co side)
  25. Ring-necked Duck Aythya collaris
    # Count: 2
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  26. Tufted Duck Aythya fuligula
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Firestone Gravel Pits (view from road)
  27. Greater Scaup Aythya marila
    # Count: 1
    Date:
    Observer: David Ely
    Location: Poudre Ponds
  28. Lesser Scaup Aythya affinis
    # Count: 70
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  29. Surf Scoter Melanitta perspicillata
    # Count: 1
    Date:
    Observer: David Ely
    Location: Pawnee NG--Adams and Bunker Reservoirs
  30. White-winged Scoter Melanitta deglandi
    # Count: 2
    Date:
    Observer: David Ely
    Location: Union Reservoir
  31. Black Scoter Melanitta americana
    # Count: 1
    Date:
    Observer: Jonelle Balais
    Location: Union Reservoir
  32. Long-tailed Duck Clangula hyemalis
    # Count: 1
    Date:
    Observer: Thomas Kihn
    Location: Greeley
  33. Bufflehead Bucephala albeola
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Sautcy Lake
  34. Common Goldeneye Bucephala clangula
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Sautcy Lake
  35. Barrow's Goldeneye Bucephala islandica
    # Count: 1
    Date:
    Observer: Bruce Bosley
    Location: Union Reservoir
  36. Hooded Merganser Lophodytes cucullatus
    # Count: 1
    Date:
    Observer: Alex Cruz Jr 🦤
    Location: Poudre Ponds
  37. Common Merganser Mergus merganser
    # Count: 3
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  38. Red-breasted Merganser Mergus serrator
    # Count: 3
    Date:
    Observer: Mark Holmgren
    Location: Union Reservoir
  39. Ruddy Duck Oxyura jamaicensis
    # Count: 150
    Date:
    Observer: Van Remsen
    Location: Horse Creek Reservoir (Weld Co side)
  40. Wild Turkey Meleagris gallopavo
    # Count: 3
    Date:
    Observer: David Hayes
    Location: Pawnee NG--Pawnee Buttes and area
  41. Sharp-tailed Grouse Tympanuchus phasianellus
    # Count: 5
    Date:
    Observer: Mackenzie Goldthwait
    Location: WCR 115
  42. Pied-billed Grebe Podilymbus podiceps
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Horse Creek Reservoir (Weld Co side)
  43. Horned Grebe Podiceps auritus
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Newill Lake
  44. Red-necked Grebe Podiceps grisegena
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  45. Eared Grebe Podiceps nigricollis
    # Count: 4
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  46. Western Grebe Aechmophorus occidentalis
    # Count: 12
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  47. Clark's Grebe Aechmophorus clarkii
    # Count: X
    Date:
    Observer: Chip Blake
    Location: Union Reservoir
  48. Rock Pigeon Columba livia
    # Count: 3
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  49. Band-tailed Pigeon Patagioenas fasciata
    # Count: 1
    Date:
    Observer: Frank and Nancy Hatch
    Location: Lower Latham
  50. Eurasian Collared-Dove Streptopelia decaocto
    # Count: 1
    Date:
    Observer: John Esperance
    Location: Pawnee National Grassland, CO.
  51. White-winged Dove Zenaida asiatica
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: 20 miles west of Grover
  52. Mourning Dove Zenaida macroura
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  53. Greater Roadrunner Geococcyx californianus
    # Count: 1
    Date:
    Observer: James Eley
    Location: Stewart's Pond
  54. Yellow-billed Cuckoo Coccyzus americanus
    # Count: X
    Date:
    Observer: Lynda Brothers
    Location: Pawnee NG--Crow Valley CG
  55. Black-billed Cuckoo Coccyzus erythropthalmus
    # Count: 1
    Date:
    Observer: John Vanderpoel
    Location: Pawnee NG--Crow Valley CG
  56. Common Nighthawk Chordeiles minor
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  57. Common Poorwill Phalaenoptilus nuttallii
    # Count: X
    Date:
    Observer: Stan Koster
    Location: Windsor Reservoir
  58. Black Swift Cypseloides niger
    # Count: 1
    Date:
    Observer: Ted Floyd
    Location: Union Reservoir
  59. Chimney Swift Chaetura pelagica
    # Count: X
    Date:
    Observer: Steve Pelikan
    Location: Rick's House Johnstown
  60. White-throated Swift Aeronautes saxatalis
    # Count: 1
    Date:
    Observer: Bill Pulliam
    Location: Pawnee NG--Pawnee Buttes and area
  61. Black-chinned Hummingbird Archilochus alexandri
    # Count: X
    Date:
    Observer: Rachel Kolokoff Hopper
    Location: Greeley-Norma Erickson's
  62. Costa's Hummingbird Calypte costae
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Pawnee NG--Crow Valley CG
  63. Calliope Hummingbird Selasphorus calliope
    # Count: 1
    Date:
    Observer: Chris Wood
    Location: Greeley---Norma Erickson's
  64. Rufous Hummingbird Selasphorus rufus
    # Count: X
    Date:
    Observer: Gary Bowman
    Location: Pawnee National Grasslands
  65. Broad-tailed Hummingbird Selasphorus platycercus
    # Count: X
    Date:
    Observer: Ron Wagner
    Location: Union Reservoir
  66. King Rail Rallus elegans
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Lower Latham Reservoir area
  67. Virginia Rail Rallus limicola
    # Count: X
    Date:
    Observer: Bernard Morris
    Location: Lower Latham Reservoir area
  68. Sora Porzana carolina
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Banner Lakes SWA (closed April 1 - July 15)
  69. Common Gallinule Gallinula galeata
    # Count: 1
    Date:
    Observer: Loch Kilpatrick
    Location: St. Vrain SP
  70. American Coot Fulica americana
    # Count: 45
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  71. Black Rail Laterallus jamaicensis
    # Count: 1
  72. Sandhill Crane Antigone canadensis
    # Count: 2
    Date:
    Observer: Van Remsen
    Location: Horse Creek Reservoir (Weld Co side)
  73. Whooping Crane Grus americana
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Greeley
  74. Black-necked Stilt Himantopus mexicanus
    # Count: X
    Date:
    Observer: Stan Koster
    Location: Windsor Reservoir
  75. American Avocet Recurvirostra americana
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  76. Black-bellied Plover Pluvialis squatarola
    # Count: 1
    Date:
    Observer: Narca Moore
    Location: Union Reservoir
  77. American Golden-Plover Pluvialis dominica
    # Count: X
    Date:
    Observer: Randall Siebert
    Location: Union Reservoir
  78. Killdeer Charadrius vociferus
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  79. Semipalmated Plover Charadrius semipalmatus
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Leased Lake near Newill Lake
  80. Piping Plover Charadrius melodus
    # Count: 1
    Date:
    Observer: Narca Moore
    Location: Union Reservoir
  81. Mountain Plover Anarhynchus montanus
    # Count: X
    Date:
    Observer: Thomas Tinsley
    Location: Pawnee NG--Pawnee Buttes and area
  82. Snowy Plover Anarhynchus nivosus
    # Count: X
    Date:
    Observer: Narca Moore
    Location: Union Reservoir
  83. Upland Sandpiper Bartramia longicauda
    # Count: 1
    Date:
    Observer: Bruce Bosley
    Location: Kersey to Hudson road, Weld rd. 49
  84. Whimbrel Numenius phaeopus
    # Count: 1
    Date:
    Observer: Karl Overman
    Location: Ault, .5 miles east of
  85. Long-billed Curlew Numenius americanus
    # Count: 2
    Date:
    Observer: Spike Millington
    Location: Pawnee NG--Pawnee Buttes and area
  86. Hudsonian Godwit Limosa haemastica
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Severance
  87. Marbled Godwit Limosa fedoa
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Prospect Reservoir (Weld Co.)
  88. Short-billed Dowitcher Limnodromus griseus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  89. Long-billed Dowitcher Limnodromus scolopaceus
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Banner Lakes SWA (closed April 1 - July 15)
  90. Wilson's Snipe Gallinago delicata
    # Count: 3
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  91. Wilson's Phalarope Phalaropus tricolor
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  92. Red Phalarope Phalaropus fulicarius
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Milton Reservoir (restricted access)
  93. Red-necked Phalarope Phalaropus lobatus
    # Count: 125
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  94. Spotted Sandpiper Actitis macularius
    # Count: 2
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  95. Solitary Sandpiper Tringa solitaria
    # Count: 1
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  96. Lesser Yellowlegs Tringa flavipes
    # Count: 9
    Date:
    Observer: Van Remsen
    Location: Banner Lakes SWA (closed April 1 - July 15)
  97. Willet Tringa semipalmata
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Prospect Reservoir (Weld Co.)
  98. Greater Yellowlegs Tringa melanoleuca
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Newill Lake
  99. Ruddy Turnstone Arenaria interpres
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  100. Red Knot Calidris canutus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  101. Ruff Calidris pugnax
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Weld Co. Rds. 6 and 61
  102. Sharp-tailed Sandpiper Calidris acuminata
    # Count: 1
    Date:
    Observer: David Dowell
    Location: Stewart's Pond
  103. Stilt Sandpiper Calidris himantopus
    # Count: 2
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  104. Buff-breasted Sandpiper Calidris subruficollis
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Milton Reservoir (restricted access)
  105. Sanderling Calidris alba
    # Count: 2
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  106. Dunlin Calidris alpina
    # Count: 1
    Date:
    Observer: David Ely
    Location: Windsor Lake
  107. Baird's Sandpiper Calidris bairdii
    # Count: X
    Date:
    Observer: Edmond Holroyd
    Location: Windsor Lake
  108. White-rumped Sandpiper Calidris fuscicollis
    # Count: 1
    Date:
    Observer: Nita Heilman
    Location: Pawnee NG--Pawnee Buttes and area
  109. Least Sandpiper Calidris minutilla
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Leased Lake near Newill Lake
  110. Pectoral Sandpiper Calidris melanotos
    # Count: 6
    Date:
    Observer: Werner Suter
    Location: Lower Latham Reservoir area
  111. Western Sandpiper Calidris mauri
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Banner Lakes SWA (closed April 1 - July 15)
  112. Semipalmated Sandpiper Calidris pusilla
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Sautcy Lake
  113. Long-tailed Jaeger Stercorarius longicaudus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Windsor Reservoir
  114. Parasitic Jaeger Stercorarius parasiticus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  115. Pomarine Jaeger Stercorarius pomarinus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Prospect Reservoir (Weld Co.)
  116. Ancient Murrelet Synthliboramphus antiquus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  117. Little Gull Hydrocoloeus minutus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  118. Black-legged Kittiwake Rissa tridactyla
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  119. Sabine's Gull Xema sabini
    # Count: 1
    Date:
    Observer: David Ely
    Location: Windsor Reservoir
  120. Bonaparte's Gull Chroicocephalus philadelphia
    # Count: 40
    Date:
    Observer: Narca Moore
    Location: Union Reservoir
  121. Black-headed Gull Chroicocephalus ridibundus
    # Count: 1
    Date:
    Observer: William Kaempfer
    Location: Union Reservoir
  122. Laughing Gull Leucophaeus atricilla
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Gill
  123. Franklin's Gull Leucophaeus pipixcan
    # Count: 3
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  124. Short-billed Gull Larus brachyrhynchus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  125. Ring-billed Gull Larus delawarensis
    # Count: 30
    Date:
    Observer: Van Remsen
    Location: Lower Latham Reservoir area
  126. Herring Gull Larus argentatus
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Newill Lake
  127. Great Black-backed Gull Larus marinus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  128. Glaucous Gull Larus hyperboreus
    # Count: 1
    Date:
    Observer: Michael Britten
    Location: Union Reservoir
  129. Lesser Black-backed Gull Larus fuscus
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Union Reservoir
  130. California Gull Larus californicus
    # Count: 100
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  131. Glaucous-winged Gull Larus glaucescens
    # Count: 1
    Date:
    Observer: Carol Sullivan
    Location: Black Hollow Reservoir
  132. Slaty-backed Gull Larus schistisagus
    # Count: 1
    Date:
    Observer: Ruben Stoll
    Location: Black Hollow Reservoir
  133. Iceland Gull Larus glaucoides
    # Count: 1
    Date:
    Observer: David Ely
    Location: Windsor Lake
  134. Least Tern Sternula antillarum
    # Count: 1
    Date:
    Observer: Glenn Walbek
    Location: Lower Latham Reservoir area
  135. Caspian Tern Hydroprogne caspia
    # Count: X
    Date:
    Observer: Bryan Guarente
    Location: Lower Latham Reservoir area
  136. Black Tern Chlidonias niger
    # Count: 15
    Date:
    Observer: Van Remsen
    Location: Prospect Reservoir (Weld Co.)
  137. Forster's Tern Sterna forsteri
    # Count: 1
    Date:
    Observer: Karl Overman
    Location: Greeley generic
  138. Arctic Tern Sterna paradisaea
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Windsor
  139. Common Tern Sterna hirundo
    # Count: 1
    Date:
    Observer: Werner Suter
    Location: Lower Latham Reservoir area
  140. Red-throated Loon Gavia stellata
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Lower Latham Reservoir area
  141. Pacific Loon Gavia pacifica
    # Count: 1
    Date:
    Observer: Narca Moore
    Location: Union Reservoir
  142. Common Loon Gavia immer
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Sautcy Lake
  143. Yellow-billed Loon Gavia adamsii
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  144. Double-crested Cormorant Nannopterum auritum
    # Count: 35
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  145. Neotropic Cormorant Nannopterum brasilianum
    # Count: 1
    Date:
    Observer: William Kaempfer
    Location: Ireland Reservoir #5
  146. American White Pelican Pelecanus erythrorhynchos
    # Count: 9
    Date:
    Observer: Van Remsen
    Location: Lower Latham Reservoir area
  147. Brown Pelican Pelecanus occidentalis
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  148. American Bittern Botaurus lentiginosus
    # Count: 2
    Date:
    Observer: Van Remsen
    Location: Banner Lakes SWA (closed April 1 - July 15)
  149. Least Bittern Ixobrychus exilis
    # Count: 1
    Date:
    Observer: Don Henise
    Location: Lower Latham Reservoir area
  150. Yellow-crowned Night Heron Nyctanassa violacea
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Lower Latham Reservoir area
  151. Black-crowned Night Heron Nycticorax nycticorax
    # Count: 1
    Date:
    Observer: Arthur C. Bent Data
    Location: Fort Lupton
  152. Little Blue Heron Egretta caerulea
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Prospect Reservoir (Weld Co.)
  153. Tricolored Heron Egretta tricolor
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Masters
  154. Snowy Egret Egretta thula
    # Count: 2
    Date:
    Observer: Frank Justice
    Location: W of Ft. Lupton
  155. Green Heron Butorides virescens
    # Count: 1
    Date:
    Observer: John Collins
    Location: Lower Latham Reservoir area
  156. Western Cattle Egret Bubulcus ibis
    # Count: 5
    Date:
    Observer: Van Remsen
    Location: Lower Latham Reservoir area
  157. Great Egret Ardea alba
    # Count: 1
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  158. Great Blue Heron Ardea herodias
    # Count: 11
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  159. Glossy Ibis Plegadis falcinellus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Weld County Rds. 42 and 43
  160. White-faced Ibis Plegadis chihi
    # Count: 4
    Date:
    Observer: Narca Moore
    Location: Union Reservoir
  161. Roseate Spoonbill Platalea ajaja
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Riverside Reservoir (restricted access)
  162. Turkey Vulture Cathartes aura
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  163. Osprey Pandion haliaetus
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Lower Latham Reservoir area
  164. Golden Eagle Aquila chrysaetos
    # Count: 1
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  165. Mississippi Kite Ictinia mississippiensis
    # Count: X
    Date:
    Observer: Bryan Guarente
    Location: Greeley
  166. Northern Harrier Circus hudsonius
    # Count: 2
    Date:
    Observer: Van Remsen
    Location: Banner Lakes SWA (closed April 1 - July 15)
  167. Sharp-shinned Hawk Accipiter striatus
    # Count: X
    Date:
    Observer: Narca Moore
    Location: Union Reservoir
  168. Cooper's Hawk Accipiter cooperii
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Pawnee NG--Crow Valley CG
  169. American Goshawk Accipiter atricapillus
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Goshawk Crossing
  170. Bald Eagle Haliaeetus leucocephalus
    # Count: 5
    Date:
    Observer: Hugh Kingery
    Location: Weld Ft St Vrain
  171. Red-shouldered Hawk Buteo lineatus
    # Count: 2
    Date:
    Observer: John Vanderpoel
    Location: Ireland Reservoir #5
  172. Broad-winged Hawk Buteo platypterus
    # Count: 1
    Date:
    Observer: David Ely
    Location: Pawnee NG--Crow Valley CG
  173. Swainson's Hawk Buteo swainsoni
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  174. Red-tailed Hawk Buteo jamaicensis
    # Count: 1
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  175. Rough-legged Hawk Buteo lagopus
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Pawnee Grasslands
  176. Ferruginous Hawk Buteo regalis
    # Count: X
    Date:
    Observer: George Clark
    Location: Pawnee NG (Please use more-specific locations)
  177. Barn Owl Tyto alba
    # Count: 2
    Date:
    Observer: John Vanderpoel
    Location: Riverside Reservoir (restricted access)
  178. Eastern Screech-Owl Megascops asio
    # Count: 3
    Date:
    Observer: Kevin Moore
    Location: Pawnee NG--Pawnee Buttes and area
  179. Snowy Owl Bubo scandiacus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Masters
  180. Great Horned Owl Bubo virginianus
    # Count: 3
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  181. Burrowing Owl Athene cunicularia
    # Count: 1
    Date:
    Observer: Steve Warnick
    Location: Windsor
  182. Long-eared Owl Asio otus
    # Count: 2
  183. Short-eared Owl Asio flammeus
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Pawnee NG--Crow Valley CG
  184. Northern Saw-whet Owl Aegolius acadicus
    # Count: 1
    Date:
    Observer: David Ely
    Location: Pawnee NG--Crow Valley CG
  185. Belted Kingfisher Megaceryle alcyon
    # Count: 2
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  186. Yellow-bellied Sapsucker Sphyrapicus varius
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Pawnee NG--Crow Valley CG
  187. Red-naped Sapsucker Sphyrapicus nuchalis
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  188. Lewis's Woodpecker Melanerpes lewis
    # Count: 1
    Date:
    Observer: Narca Moore
    Location: Union Reservoir
  189. Red-headed Woodpecker Melanerpes erythrocephalus
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Lower Latham Reservoir area
  190. Red-bellied Woodpecker Melanerpes carolinus
    # Count: 1
    Date:
    Observer: Norman Erthal
    Location: Briggsdale Cemetery
  191. Downy Woodpecker Dryobates pubescens
    # Count: 1
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  192. Hairy Woodpecker Dryobates villosus
    # Count: X
    Date:
    Observer: William Zwartjes cc
    Location: Colorado-Weld Co.-Ft. Lupton-Vollmar Schoolhouse
  193. Northern Flicker Colaptes auratus
    # Count: 6
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  194. Crested Caracara Caracara plancus
    # Count: 1
    Date:
    Observer: shawn mason
    Location: Poudre River Trail, Sheep Draw east of N. 71st Ave
  195. American Kestrel Falco sparverius
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  196. Merlin Falco columbarius
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Greeley to La Salle
  197. Gyrfalcon Falco rusticolus
    # Count: 1
  198. Peregrine Falcon Falco peregrinus
    # Count: 1
    Date:
    Observer: Shawn Ashbaugh
    Location: La Salle
  199. Prairie Falcon Falco mexicanus
    # Count: X
    Date:
    Observer: George Clark
    Location: Pawnee NG (Please use more-specific locations)
  200. Olive-sided Flycatcher Contopus cooperi
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  201. Western Wood-Pewee Contopus sordidulus
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  202. Eastern Wood-Pewee Contopus virens
    # Count: X
    Date:
    Observer: Bryan Guarente
    Location: Pawnee NG--Crow Valley CG
  203. Alder Flycatcher Empidonax alnorum
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Fort Lupton
  204. Willow Flycatcher Empidonax traillii
    # Count: X
    Date:
    Observer: Scott Stoleson
    Location: Pawnee NG--Crow Valley CG
  205. Least Flycatcher Empidonax minimus
    # Count: X
    Date:
    Observer: Jan Thom
    Location: Pawnee NG--Crow Valley CG
  206. Hammond's Flycatcher Empidonax hammondii
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  207. Gray Flycatcher Empidonax wrightii
    # Count: 1
    Date:
    Observer: Paul Sweet
    Location: Pawnee NG--Crow Valley CG
  208. Dusky Flycatcher Empidonax oberholseri
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  209. Western Flycatcher Empidonax difficilis
    # Count: 1
    Date:
    Observer: Robin Meredith
    Location: Pawnee NG--Pawnee Buttes and area
  210. Black Phoebe Sayornis nigricans
    # Count: 1
    Date:
    Observer: C. Lawton
    Location: Poudre River
  211. Eastern Phoebe Sayornis phoebe
    # Count: X
    Date:
    Observer: William Zwartjes cc
    Location: Colorado-Weld Co.-Pawnee Grasslands-Toedtli Ranch
  212. Say's Phoebe Sayornis saya
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  213. Vermilion Flycatcher Pyrocephalus rubinus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Hudson
  214. Ash-throated Flycatcher Myiarchus cinerascens
    # Count: X
    Date:
    Observer: Ric Olson
    Location: Milton Reservoir (restricted access)
  215. Great Crested Flycatcher Myiarchus crinitus
    # Count: X
    Date:
    Observer: Ric Olson
    Location: Milton Reservoir (restricted access)
  216. Cassin's Kingbird Tyrannus vociferans
    # Count: 2
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  217. Western Kingbird Tyrannus verticalis
    # Count: 1
    Date:
    Observer: Steve Warnick
    Location: Windsor
  218. Eastern Kingbird Tyrannus tyrannus
    # Count: 1
    Date:
    Observer: MTOS- Shelby
    Location: Platte River and Hwy 34
  219. Scissor-tailed Flycatcher Tyrannus forficatus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Briggsdale
  220. White-eyed Vireo Vireo griseus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Riverside Reservoir (restricted access)
  221. Bell's Vireo Vireo bellii
    # Count: X
    Date:
    Observer: Rachel Kolokoff Hopper
    Location: Pawnee NG--Crow Valley CG
  222. Yellow-throated Vireo Vireo flavifrons
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Pawnee NG--Crow Valley CG
  223. Cassin's Vireo Vireo cassinii
    # Count: X
    Date:
    Observer: Ric Olson
    Location: Milton Reservoir (restricted access)
  224. Blue-headed Vireo Vireo solitarius
    # Count: 1
    Date:
    Observer: William Kaempfer
    Location: Pawnee NG--Crow Valley CG
  225. Plumbeous Vireo Vireo plumbeus
    # Count: 1
    Date:
    Observer: Marilyn Turnage
    Location: Pawnee Grasslands--Crow Valley Campground
  226. Philadelphia Vireo Vireo philadelphicus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Pawnee NG--Crow Valley CG
  227. Warbling Vireo Vireo gilvus
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  228. Red-eyed Vireo Vireo olivaceus
    # Count: X
    Date:
    Observer: Narca Moore
    Location: Pawnee NG--Crow Valley CG
  229. Loggerhead Shrike Lanius ludovicianus
    # Count: 2
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  230. Northern Shrike Lanius borealis
    # Count: 2
    Date:
    Observer: Narca Moore
    Location: Union Reservoir
  231. Pinyon Jay Gymnorhinus cyanocephalus
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Baxter Lake
  232. Steller's Jay Cyanocitta stelleri
    # Count: 1
    Date:
    Observer: Chris Rurik
    Location: Just Beyond Grover on 390
  233. Blue Jay Cyanocitta cristata
    # Count: 1
    Date:
    Observer: John Reichhardt
    Location: Hillencamp House
  234. Woodhouse's Scrub-Jay Aphelocoma woodhouseii
    # Count: X
    Date:
    Observer: Bryan Guarente
    Location: Greeley
  235. Black-billed Magpie Pica hudsonia
    # Count: 1
    Date:
    Observer: Steve Warnick
    Location: Windsor
  236. American Crow Corvus brachyrhynchos
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  237. Common Raven Corvus corax
    # Count: 1
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  238. Black-capped Chickadee Poecile atricapillus
    # Count: 2
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  239. Mountain Chickadee Poecile gambeli
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Pawnee Grasslands
  240. Horned Lark Eremophila alpestris
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  241. Bank Swallow Riparia riparia
    # Count: 2
    Date:
    Observer: Van Remsen
    Location: Lower Latham Reservoir area
  242. Tree Swallow Tachycineta bicolor
    # Count: 1
    Date:
    Observer: Steve Laymon
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture
  243. Violet-green Swallow Tachycineta thalassina
    # Count: X
    Date:
    Observer: Stan Koster
    Location: Windsor Reservoir
  244. Purple Martin Progne subis
    # Count: 1
    Date:
    Observer: Peter Weber 🦉
    Location: Pawnee NG--Pawnee Buttes and area
  245. Northern Rough-winged Swallow Stelgidopteryx serripennis
    # Count: 6
    Date:
    Observer: Van Remsen
    Location: Banner Lakes SWA (closed April 1 - July 15)
  246. Barn Swallow Hirundo rustica
    # Count: 1
    Date:
    Observer: Steve Warnick
    Location: Windsor
  247. Cliff Swallow Petrochelidon pyrrhonota
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  248. Bushtit Psaltriparus minimus
    # Count: 2
    Date:
    Observer: Marquis Lachance
    Location: Lower Latham Reservoir area
  249. Ruby-crowned Kinglet Corthylio calendula
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  250. Golden-crowned Kinglet Regulus satrapa
    # Count: 1
    Date:
    Observer: Steve Larson
    Location: Pawnee NG--Crow Valley CG
  251. White-breasted Nuthatch Sitta carolinensis
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Pawnee NG--Crow Valley CG
  252. Pygmy Nuthatch Sitta pygmaea
    # Count: 1
    Date:
    Observer: Gene Rutherford
    Location: US-Colorado-Raymer-65858 County Road 116 - 40.832x-103.803
  253. Red-breasted Nuthatch Sitta canadensis
    # Count: 6
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  254. Brown Creeper Certhia americana
    # Count: 2
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Greeley to La Salle
  255. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: X
    Date:
    Observer: Ron Wagner
    Location: Union Reservoir
  256. Rock Wren Salpinctes obsoletus
    # Count: 2
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  257. Canyon Wren Catherpes mexicanus
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Pawnee NG--Crow Valley CG
  258. House Wren Troglodytes aedon
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  259. Winter Wren Troglodytes hiemalis
    # Count: X
    Date:
    Observer: Ric Olson
    Location: Milton Reservoir (restricted access)
  260. Sedge Wren Cistothorus stellaris
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Lower Latham Reservoir area
  261. Marsh Wren Cistothorus palustris
    # Count: 3
    Date:
    Observer: Van Remsen
    Location: Banner Lakes SWA (closed April 1 - July 15)
  262. Carolina Wren Thryothorus ludovicianus
    # Count: X
    Date:
    Observer: Ric Olson
    Location: Milton Reservoir (restricted access)
  263. Bewick's Wren Thryomanes bewickii
    # Count: 1
    Date:
    Observer: Norm Lewis
    Location: Roggen area: WCR's 16/77
  264. American Dipper Cinclus mexicanus
    # Count: 1
    Date:
    Observer: Garrison Doctor
    Location: Hangar
  265. European Starling Sturnus vulgaris
    # Count: 3
    Date:
    Observer: MTOS- Shelby
    Location: Platte River and Hwy 34
  266. Gray Catbird Dumetella carolinensis
    # Count: 2
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  267. Curve-billed Thrasher Toxostoma curvirostre
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Windsor
  268. Brown Thrasher Toxostoma rufum
    # Count: 4
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  269. Sage Thrasher Oreoscoptes montanus
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  270. Northern Mockingbird Mimus polyglottos
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  271. Eastern Bluebird Sialia sialis
    # Count: 2
    Date:
    Observer: Bruce Hill
    Location: Pawnee NG--Central Plains Experimental Range
  272. Western Bluebird Sialia mexicana
    # Count: 1
    Date:
    Observer: Carol Sullivan
    Location: Black Hollow Reservoir
  273. Mountain Bluebird Sialia currucoides
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Sautcy Lake
  274. Townsend's Solitaire Myadestes townsendi
    # Count: 1
    Date:
    Observer: Steve Larson
    Location: Pawnee NG--Crow Valley CG
  275. Varied Thrush Ixoreus naevius
    # Count: 1
    Date:
    Observer: Carol Sullivan
    Location: Pawnee NG--Crow Valley CG
  276. Veery Catharus fuscescens
    # Count: 2
    Date:
    Observer: David Ely
    Location: Pawnee NG--Crow Valley CG
  277. Gray-cheeked Thrush Catharus minimus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Pawnee NG--Crow Valley CG
  278. Swainson's Thrush Catharus ustulatus
    # Count: 8
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  279. Hermit Thrush Catharus guttatus
    # Count: 2
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  280. Wood Thrush Hylocichla mustelina
    # Count: 1
    Date:
    Observer: Loch Kilpatrick
    Location: Pawnee NG--Crow Valley CG
  281. American Robin Turdus migratorius
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  282. Bohemian Waxwing Bombycilla garrulus
    # Count: 8
    Date:
    Observer: Gail Keirn
    Location: Pawnee NG--Crow Valley CG
  283. Cedar Waxwing Bombycilla cedrorum
    # Count: 3
    Date:
    Observer: Dieter Kamm
    Location: Pawnee NG--Pawnee Buttes and area
  284. House Sparrow Passer domesticus
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  285. American Pipit Anthus rubescens
    # Count: 12
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  286. Sprague's Pipit Anthus spragueii
    # Count: 1
    Date:
    Observer: Rachel Kolokoff Hopper
    Location: Experimental Range
  287. Evening Grosbeak Coccothraustes vespertinus
    # Count: 2
    Date:
    Observer: Steve Larson
    Location: Pawnee NG--Crow Valley CG
  288. Pine Grosbeak Pinicola enucleator
    # Count: 1
    Date:
    Observer: shawn mason
    Location: Poudre Ponds
  289. Gray-crowned Rosy-Finch Leucosticte tephrocotis
    # Count: 200
    Date:
    Observer: Jim Dennis
    Location: Nunn
  290. Black Rosy-Finch Leucosticte atrata
    # Count: 1
    Date:
    Observer: Lori Zabel
    Location: Sandstone Ranch
  291. Brown-capped Rosy-Finch Leucosticte australis
    # Count: 1
    Date:
    Observer: Rachel Kolokoff Hopper
    Location: 18096–18098 County Road 128, Carr US-CO 40.91359, -104.71492
  292. House Finch Haemorhous mexicanus
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  293. Purple Finch Haemorhous purpureus
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Glenmere Park
  294. Cassin's Finch Haemorhous cassinii
    # Count: 2
    Date:
    Observer: Glenn Walbek
    Location: Pawnee NG--Crow Valley CG
  295. Common Redpoll Acanthis flammea
    # Count: 1
    Date:
    Observer: Norman Erthal
    Location: Pawnee NG (Please use more-specific locations)
  296. Red Crossbill Loxia curvirostra
    # Count: 1
    Date:
    Observer: Joey Kellner
    Location: Pawnee Grasslands--Stanley Ranch
  297. Pine Siskin Spinus pinus
    # Count: 1
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  298. Lesser Goldfinch Spinus psaltria
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  299. American Goldfinch Spinus tristis
    # Count: 5
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  300. Lapland Longspur Calcarius lapponicus
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Pawnee Grasslands
  301. Chestnut-collared Longspur Calcarius ornatus
    # Count: X
    Date:
    Observer: George Clark
    Location: Pawnee NG (Please use more-specific locations)
  302. Thick-billed Longspur Rhynchophanes mccownii
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  303. Snow Bunting Plectrophenax nivalis
    # Count: 1
    Date:
    Observer: Bruce Bosley
    Location: Pawnee National Grassland, New Raymer US-CO (40.6204,-103.7725)
  304. Cassin's Sparrow Peucaea cassinii
    # Count: 4
    Date:
    Observer: Van Truan
    Location: Pawnee NG--Pawnee Buttes and area
  305. Grasshopper Sparrow Ammodramus savannarum
    # Count: 2
    Date:
    Observer: Van Truan
    Location: Pawnee NG--Pawnee Buttes and area
  306. Chipping Sparrow Spizella passerina
    # Count: 74
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  307. Clay-colored Sparrow Spizella pallida
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Pawnee NG--Crow Valley CG
  308. Field Sparrow Spizella pusilla
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  309. Brewer's Sparrow Spizella breweri
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  310. Black-throated Sparrow Amphispiza bilineata
    # Count: 1
    Date:
    Observer: J.R. Rigby
    Location: Pawnee NG--Central Plains Experimental Range
  311. Lark Sparrow Chondestes grammacus
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Lower Latham Reservoir area
  312. Lark Bunting Calamospiza melanocorys
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  313. American Tree Sparrow Spizelloides arborea
    # Count: 150
    Date:
    Observer: Hugh Kingery
    Location: Weld Ft St Vrain
  314. Fox Sparrow Passerella iliaca
    # Count: X
    Date:
    Observer: Bryan Guarente
    Location: Pawnee Grasslands
  315. Dark-eyed Junco Junco hyemalis
    # Count: 8
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  316. White-crowned Sparrow Zonotrichia leucophrys
    # Count: 5
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  317. Golden-crowned Sparrow Zonotrichia atricapilla
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Pawnee NG--Crow Valley CG
  318. Harris's Sparrow Zonotrichia querula
    # Count: 4
    Date:
    Observer: Hugh Kingery
    Location: Weld Ft St Vrain
  319. White-throated Sparrow Zonotrichia albicollis
    # Count: 1
    Date:
    Observer: Steve Stachowiak
    Location: Pawnee NG--Crow Valley CG
  320. Sagebrush Sparrow Artemisiospiza nevadensis
    # Count: 1
    Date:
    Observer: Martha Beebe
    Location: Pawnee NG--Pawnee Buttes and area
  321. Vesper Sparrow Pooecetes gramineus
    # Count: 44
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  322. LeConte's Sparrow Ammospiza leconteii
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Stewart's Pond
  323. Savannah Sparrow Passerculus sandwichensis
    # Count: 3
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  324. Baird's Sparrow Centronyx bairdii
    # Count: 2
    Date:
    Observer: Walter Wehtje
    Location: Meadow Springs Ranch (restricted access)
  325. Song Sparrow Melospiza melodia
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  326. Lincoln's Sparrow Melospiza lincolnii
    # Count: 1
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  327. Swamp Sparrow Melospiza georgiana
    # Count: 1
    Date:
    Observer: Grant Canterbury
    Location: Greeley
  328. Canyon Towhee Melozone fusca
    # Count: 1
    Date:
    Observer: Karen Taylor
    Location: 117 Hays Avenue, Johnstown, Colorado, US (40.333, -104.917)
  329. Green-tailed Towhee Pipilo chlorurus
    # Count: X
    Date:
    Observer: David Guertin
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture
  330. Spotted Towhee Pipilo maculatus
    # Count: X
    Date:
    Observer: Ron Wagner
    Location: Union Reservoir
  331. Eastern Towhee Pipilo erythrophthalmus
    # Count: 1
    Date:
    Observer: donald beltz
    Location: crow valley CG
  332. Yellow-breasted Chat Icteria virens
    # Count: 1
    Date:
    Observer: Karl Overman
    Location: Pawnee NG--Crow Valley CG
  333. Yellow-headed Blackbird Xanthocephalus xanthocephalus
    # Count: 100
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  334. Bobolink Dolichonyx oryzivorus
    # Count: X
    Date:
    Observer: John Vanderpoel
    Location: CR 44 1/2
  335. Western Meadowlark Sturnella neglecta
    # Count: 1
    Date:
    Observer: Steve Warnick
    Location: Windsor
  336. Eastern Meadowlark Sturnella magna
    # Count: 1
    Date:
    Observer: Todd Myers
    Location: Weld County Rds 39 x 38
  337. Orchard Oriole Icterus spurius
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  338. Bullock's Oriole Icterus bullockii
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  339. Baltimore Oriole Icterus galbula
    # Count: 1
    Date:
    Observer: Joey Kellner
    Location: Pawnee Grasslands--Stanley Ranch
  340. Red-winged Blackbird Agelaius phoeniceus
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  341. Brown-headed Cowbird Molothrus ater
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Lower Latham Reservoir area
  342. Rusty Blackbird Euphagus carolinus
    # Count: 1
    Date:
    Observer: Chris Wood
    Location: Union Reservoir
  343. Brewer's Blackbird Euphagus cyanocephalus
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  344. Common Grackle Quiscalus quiscula
    # Count: 38
    Date:
    Observer: Donald Beaver
    Location: N Poudre Resevoir No 3
  345. Great-tailed Grackle Quiscalus mexicanus
    # Count: X
    Date:
    Observer: Steve Pelikan
    Location: Union Reservoir
  346. Ovenbird Seiurus aurocapilla
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  347. Worm-eating Warbler Helmitheros vermivorum
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  348. Northern Waterthrush Parkesia noveboracensis
    # Count: 1
    Date:
    Observer: Joseph Gebler
    Location: Banner Lakes SWA (closed April 1 - July 15)
  349. Golden-winged Warbler Vermivora chrysoptera
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  350. Blue-winged Warbler Vermivora cyanoptera
    # Count: 1
    Date:
    Observer: Gene Rutherford
    Location: Pawnee NG--Norma's Grove
  351. Black-and-white Warbler Mniotilta varia
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  352. Prothonotary Warbler Protonotaria citrea
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Pawnee NG--Crow Valley CG
  353. Tennessee Warbler Leiothlypis peregrina
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  354. Orange-crowned Warbler Leiothlypis celata
    # Count: 2
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  355. Lucy's Warbler Leiothlypis luciae
    # Count: X
    Date:
    Observer: Josh Bruening
    Location: Eaton Cemetery
  356. Nashville Warbler Leiothlypis ruficapilla
    # Count: X
    Date:
    Observer: Ric Olson
    Location: Milton Reservoir (restricted access)
  357. Virginia's Warbler Leiothlypis virginiae
    # Count: 1
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  358. Connecticut Warbler Oporornis agilis
    # Count: 1
    Date:
    Observer: Loch Kilpatrick
    Location: Pawnee NG--Crow Valley CG
  359. MacGillivray's Warbler Geothlypis tolmiei
    # Count: 2
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  360. Mourning Warbler Geothlypis philadelphia
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Pawnee NG--Crow Valley CG
  361. Kentucky Warbler Geothlypis formosa
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Pawnee NG--Crow Valley CG
  362. Common Yellowthroat Geothlypis trichas
    # Count: 2
    Date:
    Observer: Van Remsen
    Location: Lower Latham Reservoir area
  363. Hooded Warbler Setophaga citrina
    # Count: 1
    Date:
    Observer: John Vanderpoel
    Location: Riverside Reservoir (restricted access)
  364. American Redstart Setophaga ruticilla
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Pawnee Grasslands
  365. Northern Parula Setophaga americana
    # Count: 1
    Date:
    Observer: Norman Erthal
    Location: Pawnee NG--Crow Valley CG
  366. Magnolia Warbler Setophaga magnolia
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  367. Bay-breasted Warbler Setophaga castanea
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Pawnee NG--Crow Valley CG
  368. Blackburnian Warbler Setophaga fusca
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Pawnee NG--Crow Valley CG
  369. Yellow Warbler Setophaga petechia
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  370. Chestnut-sided Warbler Setophaga pensylvanica
    # Count: 1
    Date:
    Observer: Brandon K. Percival
    Location: Pawnee NG--Crow Valley CG
  371. Blackpoll Warbler Setophaga striata
    # Count: 1
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  372. Black-throated Blue Warbler Setophaga caerulescens
    # Count: 1
    Date:
    Observer: Carl Haynie
    Location: Pawnee NG--Crow Valley CG
  373. Palm Warbler Setophaga palmarum
    # Count: 1
    Date:
    Observer: Brandon K. Percival
    Location: Pawnee NG--Crow Valley CG
  374. Pine Warbler Setophaga pinus
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Pawnee NG--Crow Valley CG
  375. Yellow-rumped Warbler Setophaga coronata
    # Count: 1
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  376. Yellow-throated Warbler Setophaga dominica
    # Count: 1
    Date:
    Observer: Vincent F. Nichnadowicz
    Location: Pawnee NG--Crow Valley CG
  377. Prairie Warbler Setophaga discolor
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Pawnee NG--Crow Valley CG
  378. Grace's Warbler Setophaga graciae
    # Count: 1
    Date:
    Observer: Cole Wild
    Location: Pawnee NG--Crow Valley CG
  379. Black-throated Gray Warbler Setophaga nigrescens
    # Count: X
    Date:
    Observer: Ric Olson
    Location: Milton Reservoir (restricted access)
  380. Townsend's Warbler Setophaga townsendi
    # Count: 3
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  381. Black-throated Green Warbler Setophaga virens
    # Count: 1
    Date:
    Observer: Vic Zerbi
    Location: Pawnee NG--Crow Valley CG
  382. Canada Warbler Cardellina canadensis
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Pawnee NG--Crow Valley CG
  383. Wilson's Warbler Cardellina pusilla
    # Count: 26
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  384. Painted Redstart Myioborus pictus
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Pawnee NG--Crow Valley CG
  385. Summer Tanager Piranga rubra
    # Count: X
    Date:
    Observer: Rachel Kolokoff Hopper
    Location: Pawnee NG--Crow Valley CG
  386. Scarlet Tanager Piranga olivacea
    # Count: 1
    Date:
    Observer: Kathy Mihm Dunning
    Location: Pawnee NG--Crow Valley CG
  387. Western Tanager Piranga ludoviciana
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Pawnee NG--Crow Valley CG
  388. Northern Cardinal Cardinalis cardinalis
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  389. Rose-breasted Grosbeak Pheucticus ludovicianus
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  390. Black-headed Grosbeak Pheucticus melanocephalus
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: Pawnee NG--Crow Valley CG
  391. Blue Grosbeak Passerina caerulea
    # Count: X
    Date:
    Observer: George Clark
    Location: Pawnee NG (Please use more-specific locations)
  392. Lazuli Bunting Passerina amoena
    # Count: X
    Date:
    Observer: John C. Miller Historic Data
    Location: Pawnee NG (Please use more-specific locations)
  393. Indigo Bunting Passerina cyanea
    # Count: X
    Date:
    Observer: Norm Lewis
    Location: Pawnee NG--Crow Valley CG
  394. Dickcissel Spiza americana
    # Count: X
    Date:
    Observer: Sue Renner Moske
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture

Exotic: Provisional (1)

  1. Ring-necked Pheasant Phasianus colchicus
    # Count: 1
    Date:
    Observer: Steve Warnick
    Location: Windsor

Exotic: Escapee (13)

  1. Graylag Goose Anser anser
    # Count: 2
    Date:
    Observer: Frank and Nancy Hatch
    Location: Glenmere Park
  2. Mute Swan Cygnus olor
    # Count: X
    Date:
    Observer: Al Guarente
    Location: Lower Latham Reservoir area
  3. Black Swan Cygnus atratus
    # Count: 1
    Date:
    Observer: Ted Floyd
    Location: Phoenix Weaponry pond--Weld County
  4. Muscovy Duck Cairina moschata
    # Count: 1
    Date:
    Observer: Bryan Guarente
    Location: Idaho Creek Open Space
  5. Helmeted Guineafowl Numida meleagris
    # Count: 9
    Date:
    Observer: Joshua Smith
    Location: Pawnee National Grassland, Briggsdale US-CO (40.6396,-104.3340)
  6. Northern Bobwhite Colinus virginianus
    # Count: X
    Date:
    Observer: John Lindfors
    Location: Pawnee Grasslands
  7. Scaled Quail Callipepla squamata
    # Count: 1
    Date:
    Observer: Renee Casias
    Location: Pawnee NG--Central Plains Experimental Range
  8. Greater Prairie-Chicken Tympanuchus cupido
    # Count: 4
    Date:
    Observer: Grant Beauprez
    Location: Well's Ranch
  9. Indian Peafowl Pavo cristatus
    # Count: 4
    Date:
    Observer: Mark Amershek
    Location: Northwest Area - Barr Lake CBC
  10. Red Junglefowl Gallus gallus
    # Count: 4
    Date:
    Observer: Susan Rosine
    Location: Lower Latham Reservoir area
  11. Chukar Alectoris chukar
    # Count: 1
    Date:
    Observer: Rudolf Koes
    Location: CO - Rd. 100 just W of Nunn
  12. African Collared-Dove Streptopelia roseogrisea
    # Count: 2
    Date:
    Observer: Chris Wood
    Location: Frederick Lake (Milavec Reservoir) & Recreation Area
  13. Budgerigar Melopsittacus undulatus
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Greeley

Hybrids (49)

  1. Snow x Ross's Goose (hybrid) Anser caerulescens x rossii
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Kersey Dairy Ponds
  2. Snow x Greater White-fronted Goose (hybrid) Anser caerulescens x albifrons
    # Count: 1
    Date:
    Observer: Chuck Aid
    Location: Stewart's Pond
  3. Snow x Cackling Goose (hybrid) Anser caerulescens x Branta hutchinsii
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Bittersweet Park
  4. Ross's x Cackling Goose (hybrid) Anser rossii x Branta hutchinsii
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Frederick Lake (Milavec Reservoir) & Recreation Area
  5. Greater White-fronted x Cackling Goose (hybrid) Anser albifrons x Branta hutchinsii
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Frederick Lake (Milavec Reservoir) & Recreation Area
  6. Greater White-fronted x Canada Goose (hybrid) Anser albifrons x Branta canadensis
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Frederick Lake (Milavec Reservoir) & Recreation Area
  7. Graylag x Canada Goose (hybrid) Anser anser x Branta canadensis
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Windsor Reservoir
  8. Snow x Canada Goose (hybrid) Anser caerulescens x Branta canadensis
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Greeley: Sanborn Park
  9. Ross's x Canada Goose (hybrid) Anser rossii x Branta canadensis
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Greeley: Poudre River Trail at 35th
  10. Snow/Ross's x Cackling/Canada Goose (hybrid) Anser caerulescens/rossii x Branta hutchinsii/canadensis
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Windsor Lake
  11. Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanoptera
    # Count: 1
    Date:
    Observer: Doug Ward
    Location: Lower Latham Reservoir area
  12. Blue-winged Teal x Northern Shoveler (hybrid) Spatula discors x clypeata
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Frederick Lake (Milavec Reservoir) & Recreation Area
  13. Cinnamon Teal x Northern Shoveler (hybrid) Spatula cyanoptera x clypeata
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Beebe Draw area
  14. Northern Shoveler x Gadwall (hybrid) Spatula clypeata x Mareca strepera
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Stewart's Pond
  15. Northern Shoveler x American Wigeon (hybrid) Spatula clypeata x Mareca americana
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Firestone Gravel Pits (view from road)
  16. Muscovy Duck x Mallard (hybrid) Cairina moschata x Anas platyrhynchos
    # Count: 1
    Date:
    Observer: Mark Holmgren
    Location: Union Reservoir
  17. Northern Shoveler x Mallard (hybrid) Spatula clypeata x Anas platyrhynchos
    # Count: 1
    Date:
    Observer: Ryan Graves
    Location: 630 Vermilion Peak Drive
  18. Gadwall x Mallard (hybrid) Mareca strepera x Anas platyrhynchos
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Weld County Road 7 Ponds
  19. American Wigeon x Mallard (hybrid) Mareca americana x Anas platyrhynchos
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Stewart's Pond
  20. Mallard x Mexican Duck (hybrid) Anas platyrhynchos x diazi
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Woods Lake
  21. Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripes
    # Count: 1
    Date:
    Observer: Chris Wood
    Location: Weld CR17--(CR2 & CR4)
  22. Mallard x Mottled Duck (hybrid) Anas platyrhynchos x fulvigula
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Stewart's Pond
  23. Mallard x Northern Pintail (hybrid) Anas platyrhynchos x acuta
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Woods Lake
  24. Canvasback x Redhead (hybrid) Aythya valisineria x americana
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: LUNA Reservoir
  25. Redhead x Ring-necked Duck (hybrid) Aythya americana x collaris
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Loloff Reservoir
  26. Ring-necked Duck x Lesser Scaup (hybrid) Aythya collaris x affinis
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Loloff Reservoir
  27. Tufted Duck x Lesser Scaup (hybrid) Aythya fuligula x affinis
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Firestone Gravel Pits (view from road)
  28. Redhead x scaup sp. (hybrid) Aythya americana x marila/affinis
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Firestone Gravel Pits (view from road)
  29. Bufflehead x Common Goldeneye (hybrid) Bucephala albeola x clangula
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Seeley Reservoir
  30. Common x Barrow's Goldeneye (hybrid) Bucephala clangula x islandica
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: LUNA Reservoir
  31. Bufflehead x Hooded Merganser (hybrid) Bucephala albeola x Lophodytes cucullatus
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Firestone Gravel Pits (view from road)
  32. Common Goldeneye x Hooded Merganser (hybrid) Bucephala clangula x Lophodytes cucullatus
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Weld County Road 7 Ponds
  33. Western x Clark's Grebe (hybrid) Aechmophorus occidentalis x clarkii
    # Count: 4
    Date:
    Observer: Steven Mlodinow
    Location: Windsor Lake
  34. Eurasian Collared-Dove x Mourning Dove (hybrid) Streptopelia decaocto x Zenaida macroura
    # Count: 1
    Date:
    Observer: Sean Walters
    Location: Frederick Lake (Milavec Reservoir) & Recreation Area
  35. Laughing x Ring-billed Gull (hybrid) Leucophaeus atricilla x Larus delawarensis
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Union Reservoir
  36. Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreus
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Windsor Lake
  37. Herring x Lesser Black-backed Gull (hybrid) Larus argentatus x fuscus
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Union Reservoir
  38. Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescens
    # Count: 1
    Date:
    Observer: Cole Wild
    Location: Black Hollow Reservoir
  39. Glossy x White-faced Ibis (hybrid) Plegadis falcinellus x chihi
    # Count: 2
    Date:
    Observer: Christian Nunes
    Location: Union Reservoir
  40. Yellow-bellied x Red-naped Sapsucker (hybrid) Sphyrapicus varius x nuchalis
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Pawnee NG--Crow Valley CG
  41. Downy x Hairy Woodpecker (hybrid) Dryobates pubescens x villosus
    # Count: 1
    Date:
    Observer: Sue Riffe
    Location: Pawnee NG--Crow Valley CG
  42. Black x Eastern Phoebe (hybrid) Sayornis nigricans x phoebe
    # Count: 1
    Date:
    Observer: Adrian Lakin
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  43. Barn x Cliff Swallow (hybrid) Hirundo rustica x Petrochelidon pyrrhonota
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Weld CR 59 wetlands
  44. Spotted x Eastern Towhee (hybrid) Pipilo maculatus x erythrophthalmus
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Pawnee NG--Crow Valley CG
  45. Western x Eastern Meadowlark (hybrid) Sturnella neglecta x magna
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Lower Latham Reservoir area
  46. Bullock's x Baltimore Oriole (hybrid) Icterus bullockii x galbula
    # Count: 1
    Date:
    Observer: Ted Floyd
    Location: Crow Valley Campground
  47. Townsend's x Black-throated Green Warbler (hybrid) Setophaga townsendi x virens
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Pawnee NG--Crow Valley CG
  48. Rose-breasted x Black-headed Grosbeak (hybrid) Pheucticus ludovicianus x melanocephalus
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Pawnee NG--Crow Valley CG
  49. Lazuli x Indigo Bunting (hybrid) Passerina amoena x cyanea
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Pawnee NG--Crow Valley CG

Additional Taxa (129)

  1. Snow/Ross's Goose Anser caerulescens/rossii
    # Count: 1
    Date:
    Observer: Paul Sweet
    Location: Hummel Reservoir
  2. Domestic goose sp. (Domestic type) Anser sp. (Domestic type)
    # Count: 1
    Date:
    Observer: Ryan Graves
    Location: Glenmere Park
  3. Cackling/Canada Goose Branta hutchinsii/canadensis
    # Count: 60
    Date:
    Observer: Narca Moore
    Location: Union Reservoir
  4. Trumpeter/Tundra Swan Cygnus buccinator/columbianus
    # Count: 1
    Date:
    Observer: Bill Schmoker
    Location: Weld CR 59 wetlands
  5. swan sp. Cygnus sp.
    # Count: 6
    Date:
    Observer: Anonymous eBirder
    Location: Baxter Lake, Berthoud
  6. goose sp. Anatidae (goose sp.)
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Glenmere Park
  7. Blue-winged/Cinnamon Teal Spatula discors/cyanoptera
    # Count: 30
    Date:
    Observer: Joey Kellner
    Location: Lochbuie Pond
  8. Eurasian/American Wigeon Mareca penelope/americana
    # Count: 2
    Date:
    Observer: yvonne parrott
    Location: Stewart Ponds Gilcrest Colo
  9. Mallard/Mexican Duck Anas platyrhynchos/diazi
    # Count: X
    Date:
    Observer: Cheri & Rich Phillips
    Location: Weld CRs 61 & 74 ponds
  10. teal sp. Anatidae sp. (teal sp.)
    # Count: 5
    Date:
    Observer: Steven Mlodinow
    Location: Lower Latham Reservoir area
  11. dabbling duck sp. Anatidae sp. (dabbling duck sp.)
    # Count: 2800
    Date:
    Observer: Van Remsen
    Location: Horse Creek Reservoir (Weld Co side)
  12. Greater/Lesser Scaup Aythya marila/affinis
    # Count: X
    Date:
    Observer: Stan Koster
    Location: Windsor Reservoir
  13. Aythya sp. Aythya sp.
    # Count: 20
    Date:
    Observer: Marquis Lachance
    Location: Lower Latham Reservoir area
  14. Common/Barrow's Goldeneye Bucephala clangula/islandica
    # Count: 3
    Date:
    Observer: Anonymous eBirder
    Location: US-CO-Longmont - 40.1816x-104.9726 - Feb 18, 2013, 12:04 PM
  15. Common/Red-breasted Merganser Mergus merganser/serrator
    # Count: X
    Date:
    Observer: Stephen Smith
    Location: Union Reservoir
  16. merganser sp. Mergellus/Lophodytes/Mergus sp.
    # Count: 1
    Date:
    Observer: Kai Webler
    Location: Sandstone Ranch
  17. duck sp. Anatidae (duck sp.)
    # Count: 500
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  18. Ring-necked/Green Pheasant Phasianus colchicus/versicolor
    # Count: 2
    Date:
    Observer: Ariel Kallenbach
    Location: Sandstone Ranch
  19. Horned/Eared Grebe Podiceps auritus/nigricollis
    # Count: X
    Date:
    Observer: David Ely
    Location: Union Reservoir
  20. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    # Count: 80
    Date:
    Observer: Narca Moore
    Location: Union Reservoir
  21. grebe sp. Podicipedidae sp.
    # Count: 40
    Date:
    Observer: Marquis Lachance
    Location: Lower Latham Reservoir area
  22. pigeon/dove sp. Columbidae sp.
    # Count: 1
    Date:
    Observer: Todd Deininger
    Location: Frederick High School
  23. nighthawk sp. Chordeiles sp.
    # Count: 1
    Date:
    Observer: Malcolm Hodges
    Location: Pawnee NG--Pawnee Buttes and area
  24. nightjar sp. Caprimulgidae sp.
    # Count: 1
    Date:
    Observer: Andrew Burnett
    Location: Pawnee NG--Pawnee Buttes and area
  25. swift sp. Apodidae sp.
    # Count: 5
    Date:
    Observer: Malcolm Hodges
    Location: Pawnee NG--Pawnee Buttes and area
  26. Selasphorus sp. Selasphorus sp.
    # Count: 1
    Date:
    Observer: Jon King
    Location: Pawnee NG--Crow Valley CG
  27. hummingbird sp. Trochilidae sp.
    # Count: 1
    Date:
    Observer: Bob Gobeille
    Location: 46504 cr 13
  28. rail/crake sp. Rallidae sp. (rail/crake sp.)
    # Count: X
    Date:
    Observer: Candice Johnson
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture
  29. American/Pacific Golden-Plover (Lesser Golden-Plover) Pluvialis dominica/fulva
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Pawnee Grasslands: BYO Playa
  30. plover sp. Charadriidae sp.
    # Count: X
    Date:
    Observer: Gloria Nikolai
    Location: Union Reservoir
  31. Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceus
    # Count: 10
    Date:
    Observer: Todd Myers
    Location: Windsor Lake
  32. Red/Red-necked Phalarope Phalaropus fulicarius/lobatus
    # Count: 25
    Date:
    Observer: Mary O'Connor
    Location: Loloff Reservoir
  33. phalarope sp. Phalaropus sp.
    # Count: 3
    Date:
    Observer: Thomas Bunker
    Location: Pawnee NG--Crow Valley CG
  34. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    # Count: X
    Date:
    Observer: Lynda Brothers
    Location: Pawnee NG--Crow Valley CG
  35. Tringa sp. Tringa sp.
    # Count: 1
    Date:
    Observer: Mark Minner-Lee 🦉
    Location: St. Vrain SP
  36. Western/Semipalmated Sandpiper Calidris mauri/pusilla
    # Count: 4
    Date:
    Observer: Hank Zaletel
    Location: Windsor Reservoir
  37. peep sp. Calidris sp. (peep sp.)
    # Count: 6
    Date:
    Observer: ISS Data
    Location: Windsor Reservoir
  38. Calidris sp. Calidris sp.
    # Count: 3
    Date:
    Observer: Jeff Gerbracht
    Location: Pawnee National Grassland, Ault US-CO (40.7928,-104.5617)
  39. large shorebird sp. Scolopacidae sp. (large shorebird sp.)
    # Count: X
    Date:
    Observer: David Hayes
    Location: Lakes E of Severance
  40. shorebird sp. Charadriiformes sp.
    # Count: 30
    Date:
    Observer: Gray Gallogly Records
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture
  41. jaeger sp. Stercorarius sp. (jaeger sp.)
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Union Reservoir
  42. Herring/Glaucous-winged Gull Larus argentatus/glaucescens
    # Count: 1
    Date:
    Observer: David Wade
    Location: Black Hollow Reservoir
  43. Herring/Iceland Gull Larus argentatus/glaucoides
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Firestone Gravel Pits (view from road)
  44. Larus sp. Larus sp.
    # Count: 1
    Date:
    Observer: Nick Komar
    Location: Black Hollow Reservoir
  45. gull sp. Larinae sp.
    # Count: X
    Date:
    Observer: Cameron Eckert
    Location: Pawnee National Grasslands
  46. Forster's/Common Tern Sterna forsteri/hirundo
    # Count: 3
    Date:
    Observer: Marquis Lachance
    Location: Lower Latham Reservoir area
  47. Common/Arctic Tern Sterna hirundo/paradisaea
    # Count: 2
    Date:
    Observer: Oscar Johnson
    Location: Riverside Reservoir (restricted access)
  48. Sterna sp. Sterna sp.
    # Count: 5
    Date:
    Observer: Mark Robbins
    Location: Riverside Reservoir (restricted access)
  49. tern sp. Sterninae sp.
    # Count: 1
    Date:
    Observer: Thomas Bunker
    Location: Firestone Gravel Pits (view from road)
  50. Arctic/Pacific Loon Gavia arctica/pacifica
    # Count: 1
    Date:
    Observer: Mike Blatchley
    Location: Union Reservoir
  51. loon sp. Gavia sp.
    # Count: 1
    Date:
    Observer: Marcel Such
    Location: Union Reservoir
  52. Double-crested/Neotropic Cormorant Nannopterum auritum/brasilianum
    # Count: 1
    Date:
    Observer: Mark Linardi
    Location: Pawnee National Grasslands
  53. cormorant sp. Phalacrocoracidae sp.
    # Count: 30
    Date:
    Observer: Chris Goulart
    Location: Mose Davis Lake area
  54. Yellow-crowned/Black-crowned Night Heron Nycticorax nycticorax/Nyctanassa violacea
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Baxter Lake
  55. white egret sp. Egretta/Bubulcus/Ardea sp.
    # Count: 2
    Date:
    Observer: Cheryl Chessick
    Location: Lower Latham Reservoir area
  56. Glossy/White-faced Ibis Plegadis falcinellus/chihi
    # Count: 1
    Date:
    Observer: Steven Guy
    Location: Lower Latham Reservoir area
  57. Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperii
    # Count: 1
    Date:
    Observer: Malcolm Hodges
    Location: Pawnee NG--Pawnee Buttes and area
  58. Accipiter sp. Accipiter sp.
    # Count: 1
    Date:
    Observer: Robert Kuntz II
    Location: Pawnee NG--Crow Valley CG
  59. Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalus
    # Count: X
    Date:
    Observer: Lynda Brothers
    Location: Pawnee NG (Please use more-specific locations)
  60. Buteo sp. Buteo sp.
    # Count: 1
    Date:
    Observer: Narca Moore
    Location: US-CO-Weld—drive along Highway 36
  61. Buteo/eagle sp. Buteo/eagle sp.
    # Count: 1
    Date:
    Observer: Todd Deininger
    Location: Frederick High School
  62. hawk sp. Accipitridae sp. (hawk sp.)
    # Count: 1
    Date:
    Observer: Scott Severs
    Location: Peschel OS1
  63. eagle sp. Accipitridae sp. (eagle sp.)
    # Count: 1
    Date:
    Observer: Esther Martinez
    Location: Eagle spotted
  64. Long-eared/Short-eared Owl Asio otus/flammeus
    # Count: 1
    Date:
    Observer: Bruce Bosley
    Location: Pawnee National Grassland, New Raymer US-CO (40.6204,-103.7725)
  65. owl sp. Strigiformes sp.
    # Count: 1
    Date:
    Observer: Narca Moore
    Location: US-CO-Weld—Farmhouse where I lived
  66. Yellow-bellied/Red-naped Sapsucker Sphyrapicus varius/nuchalis
    # Count: 1
    Date:
    Observer: Cole Fredricks
    Location: Pawnee NG--Crow Valley CG
  67. sapsucker sp. Sphyrapicus sp.
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Pawnee NG--Crow Valley CG
  68. Downy/Hairy Woodpecker Dryobates pubescens/villosus
    # Count: 1
    Date:
    Observer: Marcia Clouser
    Location: Pawnee NG--Crow Valley CG
  69. woodpecker sp. Picidae sp.
    # Count: 1
    Date:
    Observer: Laurita Summerton
    Location: Pawnee NG--Pawnee Buttes and area
  70. large falcon sp. Falco sp. (large falcon sp.)
    # Count: 1
    Date:
    Observer: Rachel Kolokoff Hopper
    Location: Drake Lake
  71. small falcon sp. Falco sp. (small falcon sp.)
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Glenmere Park
  72. falcon sp. Falco sp.
    # Count: X
    Date:
    Observer: Andrew Core
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture
  73. diurnal raptor sp. Accipitriformes/Falconiformes sp.
    # Count: 1
    Date:
    Observer: Will Piper
    Location: Colorado-Weld Co.-Ft. Lupton-Vollmar Schoolhouse
  74. Western/Eastern Wood-Pewee Contopus sordidulus/virens
    # Count: X
    Date:
    Observer: Irene Rivas
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture
  75. pewee sp. (Contopus sp.) Contopus sp.
    # Count: X
    Date:
    Observer: Anonymous eBirder
    Location: Crow Valley, Briggsdale
  76. Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/traillii
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Pawnee NG--Crow Valley CG
  77. Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseri
    # Count: 2
    Date:
    Observer: Christopher Takacs
    Location: Pawnee NG--Crow Valley CG
  78. Gray/Dusky Flycatcher Empidonax wrightii/oberholseri
    # Count: 2
    Date:
    Observer: Christopher Hollister
    Location: Pawnee NG--Crow Valley CG
  79. Empidonax sp. Empidonax sp.
    # Count: 6
    Date:
    Observer: Hugh Kingery
    Location: Pawnee NG--Crow Valley CG
  80. Myiarchus sp. Myiarchus sp.
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Pawnee NG--Crow Valley CG
  81. Cassin's/Western Kingbird Tyrannus vociferans/verticalis
    # Count: 2
    Date:
    Observer: Bruce Hill
    Location: Pawnee NG--Norma's Grove
  82. yellow-bellied kingbird sp. Tyrannus sp. (yellow-bellied)
    # Count: 2
    Date:
    Observer: Allen Chartier
    Location: Pawnee NG--Pawnee Buttes and area
  83. new world flycatcher sp. Tyrannidae sp.
    # Count: 6
    Date:
    Observer: Malcolm Hodges
    Location: Pawnee NG--Pawnee Buttes and area
  84. Cassin's/Blue-headed Vireo Vireo cassinii/solitarius
    # Count: 2
    Date:
    Observer: Charles Lowrie
    Location: Pawnee NG--Crow Valley CG
  85. Cassin's/Plumbeous Vireo Vireo cassinii/plumbeus
    # Count: X
    Date:
    Observer: Charlie Curlee
    Location: Pawnee NG--Crow Valley CG
  86. solitary vireo sp. Vireo cassinii/solitarius/plumbeus
    # Count: 2
    Date:
    Observer: Tony Leukering
    Location: Pawnee NG--Crow Valley Work Center
  87. vireo sp. Vireo sp.
    # Count: X
    Date:
    Observer: Adelia Honeywood
    Location: Pawnee NG--Pawnee Buttes and area
  88. Loggerhead/Northern Shrike Lanius ludovicianus/borealis
    # Count: 1
    Date:
    Observer: Matt Beisel
    Location: CO; I-76
  89. shrike sp. Lanius sp.
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Black Hollow Reservoir
  90. raven sp. Corvus sp. (raven sp.)
    # Count: 1
    Date:
    Observer: Karl Overman
    Location: Stoneham, 3 miles west
  91. crow/raven sp. Corvus sp.
    # Count: 2
    Date:
    Observer: Jonathan Wisner
    Location: Ehrlich Lake
  92. Black-capped/Mountain Chickadee Poecile atricapillus/gambeli
    # Count: 1
    Date:
    Observer: Malcolm Hodges
    Location: Pawnee NG--Pawnee Buttes and area
  93. swallow sp. Hirundinidae sp.
    # Count: 10
    Date:
    Observer: Malcolm Hodges
    Location: Pawnee NG--Pawnee Buttes and area
  94. Sedge/Marsh Wren Cistothorus stellaris/palustris
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Prospect Reservoir (Weld Co.)
  95. wren sp. Troglodytidae sp.
    # Count: 1
    Date:
    Observer: Joseph Gebler
    Location: Pawnee National Grasslands
  96. Toxostoma sp. Toxostoma sp.
    # Count: 2
    Date:
    Observer: Walter Wehtje
    Location: Pawnee NG--Crow Valley CG
  97. bluebird sp. Sialia sp.
    # Count: X
    Date:
    Observer: Linda Frederick
    Location: Foster Reservoir
  98. Catharus sp. Catharus sp.
    # Count: 1
    Date:
    Observer: Ken Pals
    Location: Pawnee NG--Crow Valley CG
  99. thrush sp. Turdidae sp.
    # Count: 2
    Date:
    Observer: Malcolm Hodges
    Location: Pawnee NG--Pawnee Buttes and area
  100. pipit sp. Anthus sp.
    # Count: 1
    Date:
    Observer: David Leatherman
    Location: Pawnee NG--Crow Valley CG
  101. rosy-finch sp. Leucosticte sp.
    # Count: 120
    Date:
    Observer: Gene Rutherford
    Location: Grover, Colorado, US (40.971, -104.069)
  102. Haemorhous sp. Haemorhous sp.
    # Count: 1
    Date:
    Observer: Brian Genge
    Location: Pawnee NG--Crow Valley CG
  103. new world goldfinch sp. Spinus sp. (goldfinch sp.)
    # Count: 1
    Date:
    Observer: Chad King
    Location: Field in Greeley
  104. finch sp. Fringillidae sp.
    # Count: 10
    Date:
    Observer: Malcolm Hodges
    Location: Pawnee NG--Pawnee Buttes and area
  105. longspur sp. Calcarius/Rhynchophanes sp.
    # Count: 12
    Date:
    Observer: Timothy Davis
    Location: Pawnee NG Bird Tour--CR-96
  106. Spizella sp. Spizella sp.
    # Count: 20
    Date:
    Observer: Van Remsen
    Location: CO: Weld Co.; Horse Creek Res - Prospect Res. area
  107. Spizella sp./American Tree Sparrow Spizella/Spizelloides sp.
    # Count: 2
    Date:
    Observer: Rosario Douglas
    Location: Pawnee NG--Pawnee Buttes and area
  108. Zonotrichia sp. Zonotrichia sp.
    # Count: 1
    Date:
    Observer: David Dowell
    Location: Frank SWA / Poudre River Trail
  109. Grasshopper/Baird's Sparrow Ammodramus savannarum/Centronyx bairdii
    # Count: 1
    Date:
    Observer: Kieran Schnitzspahn
    Location: Pawnee NG--Weld CR 45 from CR 114 to 122
  110. Lincoln's/Swamp Sparrow Melospiza lincolnii/georgiana
    # Count: 1
    Date:
    Observer: Chris Goulart
    Location: Pawnee NG Bird Tour—Stops 9-11 (CR-104)
  111. Spotted/Eastern Towhee (Rufous-sided Towhee) Pipilo maculatus/erythrophthalmus
    # Count: 2
    Date:
    Observer: Jonelle Balais
    Location: Pawnee NG--Crow Valley CG
  112. towhee sp. Melozone/Pipilo sp.
    # Count: 1
    Date:
    Observer: Janet Hinshaw
    Location: Pawnee NG (Please use more-specific locations)
  113. new world sparrow sp. Passerellidae sp.
    # Count: X
    Date:
    Observer: David Ely
    Location: Weld Co.,CO- Timnath Marsh
  114. Western/Eastern Meadowlark Sturnella neglecta/magna
    # Count: 12
    Date:
    Observer: Mary Ann Levan
    Location: Sandstone Ranch
  115. Western/Chihuahuan Meadowlark Sturnella neglecta/lilianae
    # Count: 1
    Date:
    Observer: Deb Eiger
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture
  116. Eastern/Chihuahuan Meadowlark Sturnella magna/lilianae
    # Count: 1
    Date:
    Observer: Gene Rutherford
    Location: Pawnee NG--Norma's Grove
  117. Sturnella meadowlark sp. Sturnella sp.
    # Count: X
    Date:
    Observer: Narca Moore
    Location: Pawnee NG--Crow Valley CG
  118. Bullock's/Baltimore Oriole Icterus bullockii/galbula
    # Count: 1
    Date:
    Observer: Ted Floyd
    Location: Crow Valley Campground
  119. new world oriole sp. Icterus sp.
    # Count: 1
    Date:
    Observer: Catherine Labio
    Location: Pawnee NG--Crow Valley CG
  120. Rusty/Brewer's Blackbird Euphagus carolinus/cyanocephalus
    # Count: 1
    Date:
    Observer: Joanne Howl
    Location: Covington Knoll
  121. grackle sp. Quiscalus sp.
    # Count: 8
    Date:
    Observer: Peter Burke
    Location: Union Reservoir
  122. blackbird sp. Icteridae sp.
    # Count: 100
    Date:
    Observer:
    Location: USCOWeld+40.35063-104.94402
  123. new world warbler sp. Parulidae sp.
    # Count: 1
    Date:
    Observer: Christian Nunes
    Location: Pawnee NG--Crow Valley CG
  124. tanager sp. (Piranga sp.) Piranga sp.
    # Count: 1
    Date:
    Observer: Jeffrey Girven
    Location: 4133 Limestone Ave, Mead US-CO 40.18653, -104.97394
  125. Rose-breasted/Black-headed Grosbeak Pheucticus ludovicianus/melanocephalus
    # Count: 1
    Date:
    Observer: Nick Komar
    Location: South Platt River crossing at CR53
  126. Lazuli/Indigo Bunting Passerina amoena/cyanea
    # Count: 3
    Date:
    Observer: Ted Floyd
    Location: Crow Valley Campground
  127. Passerina sp. Passerina sp.
    # Count: X
    Date:
    Observer: Maggie Boswell
    Location: Erie (town)
  128. passerine sp. Passeriformes sp.
    # Count: 6
    Date:
    Observer: Scott Baron
    Location: Pawnee NG--Crow Valley CG
  129. bird sp. Aves sp.
    # Count: X
    Date:
    Observer: Luke Pheneger
    Location: Union Reservoir