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Bird List

Updated ~11 days ago
517 All Years 401 This Year 2024 273 This Month Jun 2024 302 Global Big Day 8 May 2021
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  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (301)

  1. Common Nighthawk Chordeiles minor
    # Count: 1
    Date:
    Observer: Mike Thompson
    Location: San Juan National Forest, Dolores US-CO 37.66886, -108.39773 Dolores
  2. Flammulated Owl Psiloscops flammeolus
    # Count: 2
    Date:
    Observer: Robert Pike
    Location: 7390E CR 359 Archuleta
  3. Western Screech-Owl Megascops kennicottii
    # Count: 2
    Date:
    Observer: Nic Korte
    Location: backyard, 1946 Clover Ct Mesa
  4. Sora Porzana carolina
    # Count: 3
    Date:
    Observer: Adam Vesely
    Location: Ft Lyon Wildlife Easement Bent
  5. Chimney Swift Chaetura pelagica
    # Count: 35
    Date:
    Observer: Mark Peterson
    Location: Holyoke (town) Phillips
  6. Hooded Warbler Setophaga citrina
    # Count: 1
    Date:
    Observer: Christopher Murray
    Location: Boyd Lake Larimer
  7. Dusky Grouse Dendragapus obscurus
    # Count: 3
    Date:
    Observer: Mike Thompson
    Location: San Juan National Forest, Dolores US-CO 37.79836, -108.22979 Dolores
  8. Solitary Sandpiper Tringa solitaria
    # Count: 2
    Date:
    Observer: Mark Peterson
    Location: Lion's Club Fishin' Hole Phillips
  9. Yellow-headed Blackbird Xanthocephalus xanthocephalus
    # Count: 450
    Date:
    Observer: Mark Peterson
    Location: Lion's Club Fishin' Hole Phillips
  10. Nashville Warbler Leiothlypis ruficapilla
    # Count: 1
    Date:
    Observer: Jean Folsom
    Location: Hodgson-Harris Reservoir Boulder
  11. Fox Sparrow Passerella iliaca
    # Count: 2
    Date:
    Observer: Mike Thompson
    Location: 42001–42031 County Road H, Dolores US-CO 37.79671, -108.27088 Dolores
  12. White-throated Sparrow Zonotrichia albicollis
    # Count: 1
    Date:
    Observer: Jake Shorty
    Location: Ponds at Argonne St Denver
  13. Northern Rough-winged Swallow Stelgidopteryx serripennis
    # Count: 50
    Date:
    Observer: Laura Steadman
    Location: Sombrero Marsh & Pond Boulder
  14. Barn Swallow Hirundo rustica
    # Count: 100
    Date:
    Observer: Kelly Ormesher
    Location: Union Reservoir Weld
  15. Swamp Sparrow Melospiza georgiana
    # Count: 1
    Date:
    Observer: Kelly Ormesher
    Location: Union Reservoir Weld
  16. White-throated Swift Aeronautes saxatalis
    # Count: 48
    Date:
    Observer: Weston Petty
    Location: Red Rocks Park Jefferson
  17. Prairie Falcon Falco mexicanus
    # Count: 1
    Date:
    Observer: Weston Petty
    Location: Red Rocks Park Jefferson
  18. Bonaparte's Gull Chroicocephalus philadelphia
    # Count: 75
    Date:
    Observer: Peggy Gonder
    Location: Standley Lake Park--north shore Jefferson
  19. Snow Goose Anser caerulescens
    # Count: 2
    Date:
    Observer: Phil Lyon
    Location: Highline Lake SP Mesa
  20. Red-necked Phalarope Phalaropus lobatus
    # Count: 12
    Date:
    Observer: Phil Lyon
    Location: Highline Lake SP Mesa
  21. Gray Flycatcher Empidonax wrightii
    # Count: 3
    Date:
    Observer: Brenda Wright
    Location: Lowry Ruins National Historical Landmark Montezuma
  22. Common Merganser Mergus merganser
    # Count: 17
    Date:
    Observer: Mike Thompson
    Location: Groundhog Reservoir Dolores
  23. Lewis's Woodpecker Melanerpes lewis
    # Count: 16
    Date:
    Observer: Erik Hendrickson
    Location: 10929 County Road 44, Mancos, Colorado, US (37.371, -108.24) Montezuma
  24. Blackpoll Warbler Setophaga striata
    # Count: 1
    Date:
    Observer: Alexander Brown
    Location: 4560 Darley Avenue, Boulder Boulder
  25. Osprey Pandion haliaetus
    # Count: 5
    Date:
    Observer: Sue Riffe
    Location: Shadow Mountain Lake Grand
  26. Black-and-white Warbler Mniotilta varia
    # Count: 1
    Date:
    Observer: Zach Wilson
    Location: 10558 West Vista View Drive, Littleton, Colorado, US (39.59, -105.116) Jefferson
  27. Eastern Bluebird Sialia sialis
    # Count: 1
    Date:
    Observer: Loretta Davidson
    Location: 6045 Colorado 61, Sterling, Colorado, US (40.527, -103.01) Logan
  28. Carolina Wren Thryothorus ludovicianus
    # Count: 1
    Date:
    Observer: Luke Pheneger
    Location: Lamar Community College Prowers
  29. Worm-eating Warbler Helmitheros vermivorum
    # Count: 1
    Date:
    Observer: Luke Pheneger
    Location: Lamar Community College Prowers
  30. MacGillivray's Warbler Geothlypis tolmiei
    # Count: 3
    Date:
    Observer: Luke Pheneger
    Location: Lamar Community College Prowers
  31. Turkey Vulture Cathartes aura
    # Count: 30
    Date:
    Observer: Michael Lester
    Location: Two Buttes SWA--below dam Baca
  32. Olive-sided Flycatcher Contopus cooperi
    # Count: 1
    Date:
    Observer: Michael Lester
    Location: Two Buttes SWA--below dam Baca
  33. Lincoln's Sparrow Melospiza lincolnii
    # Count: 4
    Date:
    Observer: Bethany Ferguson
    Location: Balsam Pond Park Jefferson
  34. Orchard Oriole Icterus spurius
    # Count: 6
    Date:
    Observer: Michael Lester
    Location: Two Buttes SWA--below dam Baca
  35. Northern Pintail Anas acuta
    # Count: 11
    Date:
    Observer: Andrew Spencer
    Location: Arapaho NWR--Auto Loop Jackson
  36. Semipalmated Plover Charadrius semipalmatus
    # Count: 6
    Date:
    Observer: Andrew Spencer
    Location: Arapaho NWR--Auto Loop Jackson
  37. Long-billed Dowitcher Limnodromus scolopaceus
    # Count: 74
    Date:
    Observer: Andrew Spencer
    Location: Arapaho NWR--Auto Loop Jackson
  38. Wilson's Phalarope Phalaropus tricolor
    # Count: 580
    Date:
    Observer: Andrew Spencer
    Location: Arapaho NWR--Auto Loop Jackson
  39. Common Loon Gavia immer
    # Count: 3
    Date:
    Observer: Brenda Wright
    Location: Narraguinnep Reservoir Montezuma
  40. Savannah Sparrow Passerculus sandwichensis
    # Count: 11
    Date:
    Observer: Andrew Spencer
    Location: Arapaho NWR--Auto Loop Jackson
  41. Horned Grebe Podiceps auritus
    # Count: 2
    Date:
    Observer: Jeff Percell
    Location: Matthew T. Glasser Reservoir Broomfield
  42. Wood Duck Aix sponsa
    # Count: 11
    Date:
    Observer: lisa clements
    Location: Pueblo City Park Pueblo
  43. Brewer's Blackbird Euphagus cyanocephalus
    # Count: 100
    Date:
    Observer: Laurie Zuckerman
    Location: Virginia Dale south to Livermore Highway 287 Larimer
  44. Sanderling Calidris alba
    # Count: 11
    Date:
    Observer: Mark Peterson
    Location: Patent Creek Playa, Yuma CR 58 Yuma
  45. Glossy Ibis Plegadis falcinellus
    # Count: 1
    Date:
    Observer: Mark Peterson
    Location: Patent Creek Playa, Yuma CR 58 Yuma
  46. Sagebrush Sparrow Artemisiospiza nevadensis
    # Count: 1
    Date:
    Observer: Buzz Schaumberg
    Location: Empire (town) Clear Creek
  47. Pinyon Jay Gymnorhinus cyanocephalus
    # Count: 65
    Date:
    Observer: Jackson Trappett
    Location: V 8/10 Rd, Loma US-CO 39.35825, -108.69807 Mesa
  48. Common Goldeneye Bucephala clangula
    # Count: 3
    Date:
    Observer: Sue Riffe
    Location: Windy Gap Reservoir Grand
  49. Violet-green Swallow Tachycineta thalassina
    # Count: 120
    Date:
    Observer: Eric Delbecq
    Location: Leatha Jean Stassen SWA Mesa
  50. American Redstart Setophaga ruticilla
    # Count: 1
    Date:
    Observer: Adam Vesely
    Location: Melody Tempel Grove Bent
  51. Black-headed Grosbeak Pheucticus melanocephalus
    # Count: 6
    Date:
    Observer: Eric Delbecq
    Location: Leatha Jean Stassen SWA Mesa
  52. Mountain Plover Anarhynchus montanus
    # Count: 7
    Date:
    Observer: Brenda Wo
    Location: Pawnee NG--BYO Playa Weld
  53. White-faced Ibis Plegadis chihi
    # Count: 246
    Date:
    Observer: Steven Farr
    Location: Pastorius Reservoir La Plata
  54. Semipalmated Sandpiper Calidris pusilla
    # Count: 10
    Date:
    Observer: Diane Birks
    Location: Union Reservoir Weld
  55. Yellow-crowned Night Heron Nyctanassa violacea
    # Count: 1
    Date:
    Observer: Peter Stoltz
    Location: First Creek at Green Valley Ranch Denver
  56. Neotropic Cormorant Nannopterum brasilianum
    # Count: 1
    Date:
    Observer: Tyler Stuart
    Location: Pikeview Reservoir El Paso
  57. Mississippi Kite Ictinia mississippiensis
    # Count: 18
    Date:
    Observer: Kathy Mihm Dunning
    Location: Springfield (town) Baca
  58. Woodhouse's Scrub-Jay Aphelocoma woodhouseii
    # Count: 16
    Date:
    Observer: Anonymous eBirder
    Location: 16132 E Colorado Ave, Aurora US-CO 39.68424, -104.79943 Arapahoe
  59. Golden Eagle Aquila chrysaetos
    # Count: 2
    Date:
    Observer: Andrew Spencer
    Location: CR-27, Walden US-CO 40.52398, -106.13732 Jackson
  60. Green Heron Butorides virescens
    # Count: 1
    Date:
    Observer: Patricia Cohn
    Location: Riverbend Ponds Natural Area Larimer
  61. Western Flycatcher Empidonax difficilis
    # Count: 1
    Date:
    Observer: Scott Rashid
    Location: Lake Estes Larimer
  62. Golden-winged Warbler Vermivora chrysoptera
    # Count: 1
    Date:
    Observer: Scott Rashid
    Location: Lake Estes Larimer
  63. Baird's Sandpiper Calidris bairdii
    # Count: 4
    Date:
    Observer: Kelly Ormesher
    Location: Loloff Reservoir Weld
  64. Eastern Phoebe Sayornis phoebe
    # Count: 2
    Date:
    Observer: Norman Erthal
    Location: Cottonwood Canyon (Las Animas Co.; campground and upstream to W; ~0.52 mi. on road in county) Las Animas
  65. Spotted Sandpiper Actitis macularius
    # Count: 12
    Date:
    Observer: Sheila Webber
    Location: Arapahoe Bend Natural Area--Rigden Reservoir (Strauss Cabin Lake) Larimer
  66. Black Tern Chlidonias niger
    # Count: 2
    Date:
    Observer: robert beauchamp
    Location: Jumbo Reservoir (Sedgwick Co) Sedgwick
  67. Mallard Anas platyrhynchos
    # Count: 76
    Date:
    Observer: Mike Thompson
    Location: Glade Lake Dolores
  68. Sandhill Crane Antigone canadensis
    # Count: 17
    Date:
    Observer: Gregg Goodrich
    Location: Meeker Meadow Overlook Rio Blanco
  69. Belted Kingfisher Megaceryle alcyon
    # Count: 4
    Date:
    Observer: Colin Woolley
    Location: Fountain Creek Regional Park El Paso
  70. Northern Shoveler Spatula clypeata
    # Count: 250
    Date:
    Observer: diana beatty
    Location: Big Johnson Reservoir & Bluestem Prairie Open Space El Paso
  71. American Coot Fulica americana
    # Count: 500
    Date:
    Observer: diana beatty
    Location: Big Johnson Reservoir & Bluestem Prairie Open Space El Paso
  72. Piping Plover Charadrius melodus
    # Count: 3
    Date:
    Observer: Jacqui Geiselman
    Location: John Martin Reservoir Bent
  73. Rock Pigeon Columba livia
    # Count: 110
    Date:
    Observer: Eric DeFonso 🦑
    Location: Patent Creek Playa, Yuma CR 58 Yuma
  74. Hudsonian Godwit Limosa haemastica
    # Count: 2
    Date:
    Observer: Eric DeFonso 🦑
    Location: Patent Creek Playa, Yuma CR 58 Yuma
  75. Bushtit Psaltriparus minimus
    # Count: 15
    Date:
    Observer: Carol Bylsma
    Location: 28550 County Road T5, Dolores US-CO 37.45898, -108.52626 Montezuma
  76. Blue-winged Teal Spatula discors
    # Count: 32
    Date:
    Observer: Mark Peterson
    Location: PHI CR 31 between 14 And 10 Phillips
  77. Common Yellowthroat Geothlypis trichas
    # Count: 13
    Date:
    Observer: Julia Taylor
    Location: Rocky Mountain NP--Lily Lake area Larimer
  78. Little Blue Heron Egretta caerulea
    # Count: 1
    Date:
    Observer: Santi Tabares
    Location: Chatfield SP (Douglas Co) Douglas
  79. Upland Sandpiper Bartramia longicauda
    # Count: 1
    Date:
    Observer: Mark Peterson
    Location: PHI CR 29 & 8 Phillips
  80. Pine Siskin Spinus pinus
    # Count: 100
    Date:
    Observer: Jason Szyba
    Location: 130 N Spruce St, Hayden US-CO 40.49641, -107.25630 Routt
  81. Canyon Wren Catherpes mexicanus
    # Count: 2
    Date:
    Observer: C S Laux
    Location: Waterton Canyon--upstream from overhead pipes Jefferson
  82. American Pipit Anthus rubescens
    # Count: 50
    Date:
    Observer: Peggy Gonder
    Location: Evergreen Lake Jefferson
  83. Grace's Warbler Setophaga graciae
    # Count: 4
    Date:
    Observer: Brenda Wright
    Location: Joe Moore Reservoir Montezuma
  84. Rose-breasted Grosbeak Pheucticus ludovicianus
    # Count: 2
    Date:
    Observer: Buzz Schaumberg
    Location: Idaho Springs (town) Clear Creek
  85. Loggerhead Shrike Lanius ludovicianus
    # Count: 3
    Date:
    Observer: Susan Rosine
    Location: 32000-33334 County Road 10, Weldona, Colorado, US (40.471, -103.956) Morgan
  86. Ladder-backed Woodpecker Dryobates scalaris
    # Count: 2
    Date:
    Observer: Chris Gilbert
    Location: Olney Springs Reservoir Crowley
  87. White-crowned Sparrow Zonotrichia leucophrys
    # Count: 12
    Date:
    Observer: Mark Obmascik
    Location: Heron Pond Natural Area Denver
  88. Song Sparrow Melospiza melodia
    # Count: 21
    Date:
    Observer: Karen McGee
    Location: Coal Creek Trail--Erie Weld
  89. Summer Tanager Piranga rubra
    # Count: 3
    Date:
    Observer: Norman Erthal
    Location: Cottonwood Canyon Loop - East Carrizo Creek Area Baca
  90. Long-billed Curlew Numenius americanus
    # Count: 2
    Date:
    Observer: Forrest Luke
    Location: Bitter Brush SWA Moffat
  91. Sage Thrasher Oreoscoptes montanus
    # Count: 5
    Date:
    Observer: Forrest Luke
    Location: Bitter Brush SWA Moffat
  92. Yellow-billed Cuckoo Coccyzus americanus
    # Count: 1
    Date:
    Observer: Christine Alexander
    Location: Holly Rest Area Prowers
  93. Indigo Bunting Passerina cyanea
    # Count: 1
    Date:
    Observer: Christine Alexander
    Location: Holly Rest Area Prowers
  94. Red Crossbill Loxia curvirostra
    # Count: 10
    Date:
    Observer: Aaron Parmet
    Location: 265 Miesel Drive, Keystone, Colorado, US (39.61, -105.954) Summit
  95. American Dipper Cinclus mexicanus
    # Count: 6
    Date:
    Observer: Trey Rogers
    Location: 4721–4899 US-50, Salida US-CO 38.50966, -105.96356 Chaffee
  96. Scaled Quail Callipepla squamata
    # Count: 5
    Date:
    Observer: Linda Cunico
    Location: 414 S Hacienda Del Sol Dr, Pueblo West US-CO 38.32826, -104.77957 Pueblo
  97. Curve-billed Thrasher Toxostoma curvirostre
    # Count: 2
    Date:
    Observer: Linda Cunico
    Location: 414 S Hacienda Del Sol Dr, Pueblo West US-CO 38.32826, -104.77957 Pueblo
  98. Field Sparrow Spizella pusilla
    # Count: 2
    Date:
    Observer: Eric DeFonso 🦑
    Location: CR 45, Yuma Yuma
  99. White-winged Dove Zenaida asiatica
    # Count: 6
    Date:
    Observer: Cheryl Espinoza
    Location: 175 Cherry St, Burlington US-CO 39.30188, -102.27513 Kit Carson
  100. Peregrine Falcon Falco peregrinus
    # Count: 2
    Date:
    Observer: Buzz Schaumberg
    Location: US-6, Evergreen US-CO 39.73848, -105.42223 Clear Creek
  101. Chihuahuan Raven Corvus cryptoleucus
    # Count: 3
    Date:
    Observer: Kara Carragher
    Location: Comanche National Grassland, Pritchett US-CO 37.07609, -102.85496 Baca
  102. Clark's Grebe Aechmophorus clarkii
    # Count: 7
    Date:
    Observer: Skyler Bol
    Location: Fossil Creek Reservoir & Regional Open Space Larimer
  103. Western Wood-Pewee Contopus sordidulus
    # Count: 2
    Date:
    Observer: Michael Lester
    Location: Melody Tempel Grove Bent
  104. Ring-billed Gull Larus delawarensis
    # Count: 65
    Date:
    Observer: Tim Ryan
    Location: Rueter-Hess Reservoir (restricted access) Douglas
  105. Bald Eagle Haliaeetus leucocephalus
    # Count: 6
    Date:
    Observer: Amy H
    Location: Platteville Weld
  106. Red-headed Woodpecker Melanerpes erythrocephalus
    # Count: 2
    Date:
    Observer: Gwen Moore
    Location: 20191–20723 County Road 9, Kit Carson US-CO (38.9031,-102.9970) Cheyenne
  107. Wild Turkey Meleagris gallopavo
    # Count: 22
    Date:
    Observer: Curt Frankenfeld
    Location: 8066 Bannock Dr, Larkspur US-CO Douglas
  108. Hairy Woodpecker Dryobates villosus
    # Count: 4
    Date:
    Observer: Curt Frankenfeld
    Location: 8066 Bannock Dr, Larkspur US-CO Douglas
  109. Horned Lark Eremophila alpestris
    # Count: 60
    Date:
    Observer: Don Marsh
    Location: A-Bar-D Ranch (Private) Ouray
  110. European Starling Sturnus vulgaris
    # Count: 62
    Date:
    Observer: Julia Auckland
    Location: Heron Pond Natural Area Denver
  111. Ovenbird Seiurus aurocapilla
    # Count: 1
    Date:
    Observer: Curt Frankenfeld
    Location: Spruce Mountain Open Space Douglas
  112. White-eyed Vireo Vireo griseus
    # Count: 1
    Date:
    Observer: Tyler Imfeld
    Location: Wheat Ridge Greenbelt--Prospect Park & Lake Jefferson
  113. House Sparrow Passer domesticus
    # Count: 47
    Date:
    Observer: Leah Waldner
    Location: 4307–4345 45 Rd, De Beque US-CO 39.36385, -108.24971 Mesa
  114. Bank Swallow Riparia riparia
    # Count: 250
    Date:
    Observer: Jackson Trappett
    Location: 81524, Fruita US-CO 39.16755, -108.77736 Mesa
  115. Bullock's Oriole Icterus bullockii
    # Count: 15
    Date:
    Observer: Wolfe R
    Location: Two Buttes SWA--below dam Baca
  116. Caspian Tern Hydroprogne caspia
    # Count: 4
    Date:
    Observer: Edward Raynor
    Location: 3600–3898 Frank Rd, Loveland US-CO 40.41964, -105.02389 Larimer
  117. Purple Martin Progne subis
    # Count: 1
    Date:
    Observer: JoAnn Potter Riggle 🦤
    Location: Cheney Reservoir Mesa
  118. Broad-winged Hawk Buteo platypterus
    # Count: 3
    Date:
    Observer: Kevin Pero
    Location: North Gateway Park (limited access during waterfowl season) Prowers
  119. Northern Pygmy-Owl Glaucidium gnoma
    # Count: 1
    Date:
    Observer: Peggy Gonder
    Location: Lair O' the Bear Park Jefferson
  120. Marbled Godwit Limosa fedoa
    # Count: 8
    Date:
    Observer: Will Anderson
    Location: Horse Creek Reservoir (Otero County) Otero
  121. Stilt Sandpiper Calidris himantopus
    # Count: 5
    Date:
    Observer: Will Anderson
    Location: Horse Creek Reservoir (Otero County) Otero
  122. Canvasback Aythya valisineria
    # Count: 32
    Date:
    Observer: Andrew Spencer
    Location: Lake John Jackson
  123. Forster's Tern Sterna forsteri
    # Count: 39
    Date:
    Observer: Andrew Spencer
    Location: Lake John Jackson
  124. Wilson's Warbler Cardellina pusilla
    # Count: 5
    Date:
    Observer: Glenn Walbek
    Location: Lamar Community College Prowers
  125. Black-chinned Hummingbird Archilochus alexandri
    # Count: 5
    Date:
    Observer: jean Ann Mercer
    Location: 12283 Road W Montezuma
  126. Prairie Warbler Setophaga discolor
    # Count: 1
    Date:
    Observer: Colin Woolley
    Location: Chico Basin Ranch--Bell Grove (El Paso Co) (mandatory registration required at www.aikenaudubon.com) El Paso
  127. Red-breasted Nuthatch Sitta canadensis
    # Count: 5
    Date:
    Observer: Nick Moore
    Location: Flagstaff Mountain via Gregory Canyon Boulder
  128. Black-capped Chickadee Poecile atricapillus
    # Count: 20
    Date:
    Observer: Marianne Batchelder
    Location: Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together Boulder
  129. Golden-crowned Kinglet Regulus satrapa
    # Count: 1
    Date:
    Observer: Jonathan Schneider
    Location: Staunton SP (Jefferson Co) Jefferson
  130. Lark Bunting Calamospiza melanocorys
    # Count: 200
    Date:
    Observer: Bill Prather
    Location: Travel along County Roads 43, 63, and 2R Lincoln
  131. Double-crested Cormorant Nannopterum auritum
    # Count: 400
    Date:
    Observer: Gabriel McMurtry
    Location: Denver City Park--Duck Lake Denver
  132. Rufous-crowned Sparrow Aimophila ruficeps
    # Count: 1
    Date:
    Observer: Joey Kellner
    Location: Picture Canyon Baca
  133. Lesser Yellowlegs Tringa flavipes
    # Count: 6
    Date:
    Observer: Georgia Doyle
    Location: Phillips County Road 29 playa - btwn CR 10 and 2 (40.483, -102.398) Phillips
  134. Pectoral Sandpiper Calidris melanotos
    # Count: 2
    Date:
    Observer: Chris Gilbert
    Location: Lake Meredith Crowley
  135. White-rumped Sandpiper Calidris fuscicollis
    # Count: 1
    Date:
    Observer: David Dowell
    Location: Wray Fish Hatchery Yuma
  136. Chestnut-collared Longspur Calcarius ornatus
    # Count: 8
    Date:
    Observer: Lori Pivonka
    Location: Pawnee National Grassland, Nunn US-CO 40.86962, -104.60083 Weld
  137. Thick-billed Longspur Rhynchophanes mccownii
    # Count: 5
    Date:
    Observer: Lori Pivonka
    Location: Pawnee National Grassland, Nunn US-CO 40.86962, -104.60083 Weld
  138. Greater Yellowlegs Tringa melanoleuca
    # Count: 3
    Date:
    Observer: Jean Van Tatenhove
    Location: Arapahoe Bend Natural Area--Rigden Reservoir (Strauss Cabin Lake) Larimer
  139. Great-tailed Grackle Quiscalus mexicanus
    # Count: 52
    Date:
    Observer: Jean Van Tatenhove
    Location: Arapahoe Bend Natural Area--Rigden Reservoir (Strauss Cabin Lake) Larimer
  140. American Goshawk Accipiter atricapillus
    # Count: 1
    Date:
    Observer: Mike Henwood
    Location: Carson Hole Area Mesa
  141. Band-tailed Pigeon Patagioenas fasciata
    # Count: 10
    Date:
    Observer: Don Marsh
    Location: Rosy-finch site (private residence) Ouray
  142. Brown-capped Rosy-Finch Leucosticte australis
    # Count: 80
    Date:
    Observer: Don Marsh
    Location: Rosy-finch site (private residence) Ouray
  143. Cinnamon Teal Spatula cyanoptera
    # Count: 50
    Date:
    Observer: Ann Mossman
    Location: Arapaho NWR--Auto Loop Jackson
  144. Ferruginous Hawk Buteo regalis
    # Count: 3
    Date:
    Observer: Jim Nachel
    Location: Running Deer & Cottonwood Hollow Natural Areas Larimer
  145. Baltimore Oriole Icterus galbula
    # Count: 3
    Date:
    Observer: David Trevino
    Location: Brush SWA Morgan
  146. Least Sandpiper Calidris minutilla
    # Count: 22
    Date:
    Observer: Chris Goulart
    Location: Granada SWA--Midwestern Farms tract Prowers
  147. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: 11
    Date:
    Observer: Dani Elle
    Location: Sanborn Park Road, Montrose, Colorado, US (38.178, -108.233) Montrose
  148. Orange-crowned Warbler Leiothlypis celata
    # Count: 5
    Date:
    Observer: Matthew Webb
    Location: Watson Lake Larimer
  149. Palm Warbler Setophaga palmarum
    # Count: 2
    Date:
    Observer: Matthew Webb
    Location: Watson Lake Larimer
  150. American Crow Corvus brachyrhynchos
    # Count: 18
    Date:
    Observer: Janet Gallenstein
    Location: Unaweep Seep Natural Area Mesa
  151. Sharp-shinned Hawk Accipiter striatus
    # Count: 2
    Date:
    Observer: Linda Lee
    Location: Grandview Cemetery Larimer
  152. Canada Goose Branta canadensis
    # Count: 142
    Date:
    Observer: Leah Waldner
    Location: 4530 US-6, De Beque US-CO 39.32697, -108.20745 Mesa
  153. Cliff Swallow Petrochelidon pyrrhonota
    # Count: 315
    Date:
    Observer: Leah Waldner
    Location: 4530 US-6, De Beque US-CO 39.32697, -108.20745 Mesa
  154. Herring Gull Larus argentatus
    # Count: 1
    Date:
    Observer: Loren Ahonen
    Location: Blue Mesa Reservoir--eastern portion Gunnison
  155. Great Egret Ardea alba
    # Count: 6
    Date:
    Observer: Bruce Bosley
    Location: MCR Road V wetland road Weld
  156. Golden-crowned Sparrow Zonotrichia atricapilla
    # Count: 1
    Date:
    Observer: Chris Schoenfelder
    Location: Chris Home - 38.9186x-104.7262 El Paso
  157. Western Tanager Piranga ludoviciana
    # Count: 6
    Date:
    Observer: Annie Reeves
    Location: Animas River--Santa Rita Park area La Plata
  158. Red-naped Sapsucker Sphyrapicus nuchalis
    # Count: 6
    Date:
    Observer: George Steele
    Location: 642 Rd Busted Arm Draw San Miguel
  159. Western Bluebird Sialia mexicana
    # Count: 9
    Date:
    Observer: George Steele
    Location: 642 Rd Busted Arm Draw San Miguel
  160. Dusky Flycatcher Empidonax oberholseri
    # Count: 4
    Date:
    Observer: Mike Henwood
    Location: Divide Road--Thimble Point Forest Road #417 Area Mesa
  161. Eastern Kingbird Tyrannus tyrannus
    # Count: 5
    Date:
    Observer: Ron Bolton
    Location: Pawnee NG--Crow Valley CG Weld
  162. Black-necked Stilt Himantopus mexicanus
    # Count: 30
    Date:
    Observer: Nancy Eckardt
    Location: Lower Latham Reservoir area Weld
  163. Great Crested Flycatcher Myiarchus crinitus
    # Count: 2
    Date:
    Observer: Johanna Beam
    Location: Lamar Community College Prowers
  164. Gadwall Mareca strepera
    # Count: 400
    Date:
    Observer: David de Rivera Tønnessen
    Location: Walden Reservoir Jackson
  165. American Wigeon Mareca americana
    # Count: 50
    Date:
    Observer: Andrew Spencer
    Location: Walden Reservoir Jackson
  166. Green-winged Teal Anas crecca
    # Count: 43
    Date:
    Observer: Andrew Spencer
    Location: Walden Reservoir Jackson
  167. Redhead Aythya americana
    # Count: 130
    Date:
    Observer: Andrew Spencer
    Location: Walden Reservoir Jackson
  168. Ring-necked Duck Aythya collaris
    # Count: 50
    Date:
    Observer: Andrew Spencer
    Location: Walden Reservoir Jackson
  169. Lesser Scaup Aythya affinis
    # Count: 170
    Date:
    Observer: Andrew Spencer
    Location: Walden Reservoir Jackson
  170. Ruddy Duck Oxyura jamaicensis
    # Count: 40
    Date:
    Observer: David de Rivera Tønnessen
    Location: Walden Reservoir Jackson
  171. Eared Grebe Podiceps nigricollis
    # Count: 200
    Date:
    Observer: David de Rivera Tønnessen
    Location: Walden Reservoir Jackson
  172. Willet Tringa semipalmata
    # Count: 12
    Date:
    Observer: Andrew Spencer
    Location: Walden Reservoir Jackson
  173. California Gull Larus californicus
    # Count: 800
    Date:
    Observer: Andrew Spencer
    Location: Walden Reservoir Jackson
  174. American White Pelican Pelecanus erythrorhynchos
    # Count: 130
    Date:
    Observer: Andrew Spencer
    Location: Walden Reservoir Jackson
  175. Tree Swallow Tachycineta bicolor
    # Count: 400
    Date:
    Observer: Andrew Spencer
    Location: Walden Reservoir Jackson
  176. American Kestrel Falco sparverius
    # Count: 6
    Date:
    Observer: Barry Kaplan
    Location: Yampa River State Park, Hayden US-CO 40.49145, -107.31262 Routt
  177. Clark's Nutcracker Nucifraga columbiana
    # Count: 5
    Date:
    Observer: Gregg Goodrich
    Location: Meeker Circle and Town Parks Rio Blanco
  178. Red-eyed Vireo Vireo olivaceus
    # Count: 1
    Date:
    Observer: Loch Kilpatrick
    Location: Stups farm Prowers
  179. Brown-headed Cowbird Molothrus ater
    # Count: 57
    Date:
    Observer: Loch Kilpatrick
    Location: Stups farm Prowers
  180. Red-breasted Merganser Mergus serrator
    # Count: 5
    Date:
    Observer: Edward Landi
    Location: Lake Pueblo SP--Valco Ponds Pueblo
  181. Pied-billed Grebe Podilymbus podiceps
    # Count: 5
    Date:
    Observer: Santi Tabares
    Location: Harriman Lake Park Jefferson
  182. Blue-winged Warbler Vermivora cyanoptera
    # Count: 1
    Date:
    Observer: Mark Obmascik
    Location: First Creek at Green Valley Ranch Denver
  183. Northern Parula Setophaga americana
    # Count: 2
    Date:
    Observer: Santi Tabares
    Location: Harriman Lake Park Jefferson
  184. Wilson's Snipe Gallinago delicata
    # Count: 10
    Date:
    Observer: George Waaler
    Location: Dixon Reservoir Larimer
  185. Plumbeous Vireo Vireo plumbeus
    # Count: 2
    Date:
    Observer: Charles Martinez
    Location: Navajo SP Watchable Wildlife Area Archuleta
  186. Common Raven Corvus corax
    # Count: 26
    Date:
    Observer: eileen cunningham
    Location: Glade Park--Mesa CO Rd S 16.5 pond - MM3 Mesa
  187. Mountain Bluebird Sialia currucoides
    # Count: 11
    Date:
    Observer: eileen cunningham
    Location: Glade Park--Mesa CO Rd S 16.5 pond - MM3 Mesa
  188. Black-crowned Night Heron Nycticorax nycticorax
    # Count: 100
    Date:
    Observer: Katy Garon
    Location: Washington Park Denver
  189. Snowy Egret Egretta thula
    # Count: 16
    Date:
    Observer: Katy Garon
    Location: Washington Park Denver
  190. Western Kingbird Tyrannus verticalis
    # Count: 30
    Date:
    Observer: Christine Alexander
    Location: Melody Tempel Grove Bent
  191. Green-tailed Towhee Pipilo chlorurus
    # Count: 6
    Date:
    Observer: Mike Henwood
    Location: Divide Road--Rocky Pitch Loop Trail 664 Area Mesa
  192. American Bittern Botaurus lentiginosus
    # Count: 5
    Date:
    Observer: John W. Cobb
    Location: Russell Lakes SWA Saguache
  193. Marsh Wren Cistothorus palustris
    # Count: 12
    Date:
    Observer: John W. Cobb
    Location: Russell Lakes SWA Saguache
  194. Cedar Waxwing Bombycilla cedrorum
    # Count: 40
    Date:
    Observer: Nancy Peterson
    Location: Crystal River — RVR area Garfield
  195. Ruby-crowned Kinglet Corthylio calendula
    # Count: 15
    Date:
    Observer: Gloria Nikolai
    Location: Rainbow Gulch Trail El Paso
  196. Evening Grosbeak Coccothraustes vespertinus
    # Count: 20
    Date:
    Observer: Anonymous eBirder
    Location: White River National Forest, Aspen US-CO 39.18697, -106.83674 Pitkin
  197. Dark-eyed Junco Junco hyemalis
    # Count: 24
    Date:
    Observer: Gloria Nikolai
    Location: Rainbow Gulch Trail El Paso
  198. Bobolink Dolichonyx oryzivorus
    # Count: 2
    Date:
    Observer: Edward Raynor
    Location: Matthews-Reeser Bird Sanctuary Larimer
  199. House Finch Haemorhous mexicanus
    # Count: 40
    Date:
    Observer: James Anderson
    Location: NW Loveland neighborhoods Larimer
  200. Yellow-rumped Warbler Setophaga coronata
    # Count: 55
    Date:
    Observer: Mark Chavez
    Location: Bear Creek Lake Park Jefferson
  201. Northern Bobwhite Colinus virginianus
    # Count: 8
    Date:
    Observer: Steven Olson
    Location: Sand Canyon Baca
  202. Cassin's Kingbird Tyrannus vociferans
    # Count: 8
    Date:
    Observer: Steven Olson
    Location: Sand Canyon Baca
  203. Warbling Vireo Vireo gilvus
    # Count: 6
    Date:
    Observer: Nathan Pieplow
    Location: Crook, Colorado, US (40.808, -102.905) Logan
  204. Bewick's Wren Thryomanes bewickii
    # Count: 4
    Date:
    Observer: Steven Olson
    Location: Sand Canyon Baca
  205. Brown Thrasher Toxostoma rufum
    # Count: 9
    Date:
    Observer: Nathan Pieplow
    Location: Crook, Colorado, US (40.808, -102.905) Logan
  206. Swainson's Thrush Catharus ustulatus
    # Count: 3
    Date:
    Observer: Aaron Driscoll
    Location: Chico Basin Ranch--headquarters area (Pueblo Co) (mandatory registration required at www.aikenaudubon.com) Pueblo
  207. American Goldfinch Spinus tristis
    # Count: 20
    Date:
    Observer: Jean Ray
    Location: Dakota Ridge and Nearby Routt
  208. Bufflehead Bucephala albeola
    # Count: 11
    Date:
    Observer: Andrew Spencer
    Location: Pole Mountain Lake Jackson
  209. Chipping Sparrow Spizella passerina
    # Count: 180
    Date:
    Observer: Jeff Birek
    Location: Heron Pond Natural Area Denver
  210. Juniper Titmouse Baeolophus ridgwayi
    # Count: 2
    Date:
    Observer: David Darden
    Location: 2204 E Morrison Ct, Grand Junction US-CO (39.0480,-108.6435) Mesa
  211. Gray-cheeked Thrush Catharus minimus
    # Count: 1
    Date:
    Observer: Kelly Ormesher
    Location: Pawnee NG--Crow Valley CG Weld
  212. Virginia's Warbler Leiothlypis virginiae
    # Count: 3
    Date:
    Observer: Noah Brinkman
    Location: Rio Grande Nature Trail Garfield
  213. Franklin's Gull Leucophaeus pipixcan
    # Count: 34
    Date:
    Observer: David Smith
    Location: Lagerman Agricultural Preserve--Lagerman Reservoir Boulder
  214. Townsend's Warbler Setophaga townsendi
    # Count: 1
    Date:
    Observer: Matt Clark
    Location: Hammer Ranch Cheyenne
  215. Williamson's Sapsucker Sphyrapicus thyroideus
    # Count: 6
    Date:
    Observer: Josh Bruening
    Location: Mt. Margaret Trail-Red Feather Lakes, CO Larimer
  216. American Avocet Recurvirostra americana
    # Count: 150
    Date:
    Observer: John Rawinski
    Location: Blanca Wetlands (BLM) Alamosa
  217. Black-bellied Plover Pluvialis squatarola
    # Count: 4
    Date:
    Observer: John Rawinski
    Location: Blanca Wetlands (BLM) Alamosa
  218. Snowy Plover Anarhynchus nivosus
    # Count: 5
    Date:
    Observer: John Rawinski
    Location: Blanca Wetlands (BLM) Alamosa
  219. Northern Harrier Circus hudsonius
    # Count: 3
    Date:
    Observer: John Rawinski
    Location: Blanca Wetlands (BLM) Alamosa
  220. Pygmy Nuthatch Sitta pygmaea
    # Count: 21
    Date:
    Observer: Tyler Imfeld
    Location: Genesee Mountain Park--south of I-70 Jefferson
  221. Brown Creeper Certhia americana
    # Count: 3
    Date:
    Observer: Tyler Imfeld
    Location: Genesee Mountain Park--south of I-70 Jefferson
  222. Lark Sparrow Chondestes grammacus
    # Count: 30
    Date:
    Observer: Erik Hendrickson
    Location: Yucca House NM, entrance road and path Montezuma
  223. Hermit Thrush Catharus guttatus
    # Count: 3
    Date:
    Observer: Mike Henwood
    Location: Jacks Canyon Area Mesa
  224. Hooded Merganser Lophodytes cucullatus
    # Count: 6
    Date:
    Observer: Max Miller
    Location: Main Reservoir (Lakewood) Jefferson
  225. Yellow-throated Vireo Vireo flavifrons
    # Count: 1
    Date:
    Observer: Mary Burger
    Location: Chatfield SP (Douglas Co) Douglas
  226. Ash-throated Flycatcher Myiarchus cinerascens
    # Count: 7
    Date:
    Observer: David Darden
    Location: Colorado NM--Devil's Kitchen Trail Mesa
  227. Gray Vireo Vireo vicinior
    # Count: 2
    Date:
    Observer: David Darden
    Location: Colorado NM--Devil's Kitchen Trail Mesa
  228. Steller's Jay Cyanocitta stelleri
    # Count: 20
    Date:
    Observer: Steve Frye
    Location: Old Saint Vrain Rd Boulder
  229. Northern Mockingbird Mimus polyglottos
    # Count: 8
    Date:
    Observer: Luke Pheneger
    Location: Higbee Valley Road (Otero CR 804) Otero
  230. Cassin's Finch Haemorhous cassinii
    # Count: 20
    Date:
    Observer: Edward Raynor
    Location: Estes Park YMCA Camp Larimer
  231. Brewer's Sparrow Spizella breweri
    # Count: 25
    Date:
    Observer: Luke Pheneger
    Location: Higbee Valley Road (Otero CR 804) Otero
  232. Canyon Towhee Melozone fusca
    # Count: 6
    Date:
    Observer: Luke Pheneger
    Location: Higbee Valley Road (Otero CR 804) Otero
  233. Blue Grosbeak Passerina caerulea
    # Count: 4
    Date:
    Observer: Luke Pheneger
    Location: Higbee Valley Road (Otero CR 804) Otero
  234. Eastern Screech-Owl Megascops asio
    # Count: 2
    Date:
    Observer: Anonymous eBirder
    Location: 16132 E Colorado Ave, Aurora US-CO 39.68424, -104.79943 Arapahoe
  235. Great Horned Owl Bubo virginianus
    # Count: 5
    Date:
    Observer: Anonymous eBirder
    Location: 16132 E Colorado Ave, Aurora US-CO 39.68424, -104.79943 Arapahoe
  236. Prothonotary Warbler Protonotaria citrea
    # Count: 1
    Date:
    Observer: Chris Knight
    Location: Lake Pueblo SP--Valco Ponds Pueblo
  237. Cackling Goose Branta hutchinsii
    # Count: 2
    Date:
    Observer: Doug Slansky
    Location: Barr Lake SP--Neidrach Nature Trail & Visitor Center area Adams
  238. Northern Waterthrush Parkesia noveboracensis
    # Count: 3
    Date:
    Observer: Doug Slansky
    Location: Barr Lake SP--Neidrach Nature Trail & Visitor Center area Adams
  239. Black-throated Gray Warbler Setophaga nigrescens
    # Count: 4
    Date:
    Observer: Mike Henwood
    Location: Jacks Canyon Area Mesa
  240. Red-tailed Hawk Buteo jamaicensis
    # Count: 6
    Date:
    Observer: Mary Keithler
    Location: Chatfield SP (Douglas Co) Douglas
  241. Willow Flycatcher Empidonax traillii
    # Count: 1
    Date:
    Observer: mark wagner
    Location: Dixon Reservoir Larimer
  242. Say's Phoebe Sayornis saya
    # Count: 7
    Date:
    Observer: Mary Keithler
    Location: Chatfield SP (Douglas Co) Douglas
  243. Black-billed Magpie Pica hudsonia
    # Count: 20
    Date:
    Observer: Mary Keithler
    Location: Chatfield SP (Douglas Co) Douglas
  244. Blue Jay Cyanocitta cristata
    # Count: 24
    Date:
    Observer: diana beatty
    Location: Fountain Creek Regional Park--Area 5 El Paso
  245. Black Phoebe Sayornis nigricans
    # Count: 2
    Date:
    Observer: George Steele
    Location: Naturita Creek Bridge San Miguel
  246. Greater Roadrunner Geococcyx californianus
    # Count: 2
    Date:
    Observer: Joey Kellner
    Location: Two Buttes SWA--below dam Baca
  247. Canada Jay Perisoreus canadensis
    # Count: 4
    Date:
    Observer: Deborah Barnes
    Location: Mueller SP Teller
  248. Gray-crowned Rosy-Finch Leucosticte tephrocotis
    # Count: 1
    Date:
    Observer: Bryan Gieszl
    Location: Home Pitkin
  249. Black Rosy-Finch Leucosticte atrata
    # Count: 1
    Date:
    Observer: Bryan Gieszl
    Location: Home Pitkin
  250. Western Sandpiper Calidris mauri
    # Count: 6
    Date:
    Observer: JoAnn Hackos
    Location: Pawnee NG--Weld CR 45 from CR 114 to 122 Weld
  251. Downy Woodpecker Dryobates pubescens
    # Count: 7
    Date:
    Observer: John Bruder
    Location: Fountain Creek Regional Park--Area 4 El Paso
  252. Mountain Chickadee Poecile gambeli
    # Count: 14
    Date:
    Observer: Trish Gearhart
    Location: Evergreen Lake Jefferson
  253. Eurasian Collared-Dove Streptopelia decaocto
    # Count: 35
    Date:
    Observer: Van Truan
    Location: 1901 Court Street, Pueblo, Colorado, US (38.285, -104.611) Pueblo
  254. Cassin's Sparrow Peucaea cassinii
    # Count: 3
    Date:
    Observer: Norman Erthal
    Location: County Road 12, Lamar, Colorado, US (37.656, -102.545) Prowers
  255. Swainson's Hawk Buteo swainsoni
    # Count: 7
    Date:
    Observer: John W. Cobb
    Location: CR T between Crestone and Moffat Saguache
  256. Northern Flicker Colaptes auratus
    # Count: 14
    Date:
    Observer: Anne Craig
    Location: Bear Creek Greenbelt--S Kipling Pkwy to S Wadsworth Blvd Jefferson
  257. Rock Wren Salpinctes obsoletus
    # Count: 8
    Date:
    Observer: Leah Waldner
    Location: 4509–4551 V Rd, De Beque US-CO 39.32089, -108.18825 Mesa
  258. White-breasted Nuthatch Sitta carolinensis
    # Count: 8
    Date:
    Observer: Robert Pike
    Location: 7390E CR 359 Archuleta
  259. Vesper Sparrow Pooecetes gramineus
    # Count: 35
    Date:
    Observer: Santi Tabares
    Location: Bear Creek Lake Park Jefferson
  260. Burrowing Owl Athene cunicularia
    # Count: 6
    Date:
    Observer: Richard Maxfield
    Location: Lower Latham Reservoir area Weld
  261. Red-winged Blackbird Agelaius phoeniceus
    # Count: 257
    Date:
    Observer: Richard Maxfield
    Location: Lower Latham Reservoir area Weld
  262. Mourning Dove Zenaida macroura
    # Count: 62
    Date:
    Observer: DAVID HILL
    Location: Barr Lake SP Adams
  263. Veery Catharus fuscescens
    # Count: 1
    Date:
    Observer: Skyler Bol
    Location: Pawnee NG--Norma's Grove Weld
  264. Chukar Alectoris chukar
    # Count: 2
    Date:
    Observer: Logan Wagner
    Location: Cameo & Coal Canyon Mesa
  265. Black-throated Sparrow Amphispiza bilineata
    # Count: 6
    Date:
    Observer: Logan Wagner
    Location: Cameo & Coal Canyon Mesa
  266. Broad-tailed Hummingbird Selasphorus platycercus
    # Count: 13
    Date:
    Observer: Patrick O'Driscoll
    Location: Chatfield SP--Audubon Center & Trails Jefferson
  267. Cooper's Hawk Accipiter cooperii
    # Count: 4
    Date:
    Observer: Patrick O'Driscoll
    Location: Chatfield SP--Audubon Center & Trails Jefferson
  268. Gray Catbird Dumetella carolinensis
    # Count: 7
    Date:
    Observer: Patrick O'Driscoll
    Location: Chatfield SP--Audubon Center & Trails Jefferson
  269. Spotted Towhee Pipilo maculatus
    # Count: 23
    Date:
    Observer: Patrick O'Driscoll
    Location: Chatfield SP--Audubon Center & Trails Jefferson
  270. Yellow-breasted Chat Icteria virens
    # Count: 10
    Date:
    Observer: Patrick O'Driscoll
    Location: Chatfield SP--Audubon Center & Trails Jefferson
  271. Yellow Warbler Setophaga petechia
    # Count: 66
    Date:
    Observer: Patrick O'Driscoll
    Location: Chatfield SP--Audubon Center & Trails Jefferson
  272. Least Flycatcher Empidonax minimus
    # Count: 9
    Date:
    Observer: Elaine Wagner
    Location: Chatfield SP (Jefferson Co) Jefferson
  273. House Wren Troglodytes aedon
    # Count: 60
    Date:
    Observer: Elaine Wagner
    Location: Chatfield SP (Jefferson Co) Jefferson
  274. Northern Cardinal Cardinalis cardinalis
    # Count: 6
    Date:
    Observer: Matt Hofeditz
    Location: Lamar Community College Prowers
  275. Lesser Goldfinch Spinus psaltria
    # Count: 12
    Date:
    Observer: Thomas Sather
    Location: 1949 Mount Zion Dr, Golden US-CO 39.74464, -105.23175 Jefferson
  276. Western Meadowlark Sturnella neglecta
    # Count: 24
    Date:
    Observer: Luke George
    Location: Arapahoe Bend Natural Area Larimer
  277. Common Grackle Quiscalus quiscula
    # Count: 100
    Date:
    Observer: Luke George
    Location: Arapahoe Bend Natural Area Larimer
  278. Lazuli Bunting Passerina amoena
    # Count: 8
    Date:
    Observer: Thomas Sather
    Location: 1949 Mount Zion Dr, Golden US-CO 39.74464, -105.23175 Jefferson
  279. Killdeer Charadrius vociferus
    # Count: 15
    Date:
    Observer: Paul Ode
    Location: Arapahoe Bend Natural Area--Rigden Reservoir (Strauss Cabin Lake) Larimer
  280. American Robin Turdus migratorius
    # Count: 40
    Date:
    Observer: Georgia Doyle
    Location: Holyoke Cemetery Phillips
  281. Gambel's Quail Callipepla gambelii
    # Count: 23
    Date:
    Observer: Brenda Wright
    Location: Lower Yellowjacket Montezuma
  282. Western Grebe Aechmophorus occidentalis
    # Count: 150
    Date:
    Observer: Ryan Votta
    Location: Navajo SP and Reservoir Archuleta
  283. Lucy's Warbler Leiothlypis luciae
    # Count: 3
    Date:
    Observer: Brenda Wright
    Location: Lower Yellowjacket Montezuma
  284. Sharp-tailed Grouse Tympanuchus phasianellus
    # Count: 8
    Date:
    Observer: Jason Szyba
    Location: 12034–12292 County Road 70, Hayden US-CO 40.52441, -107.18123 Routt
  285. Red-bellied Woodpecker Melanerpes carolinus
    # Count: 4
    Date:
    Observer: David Dowell
    Location: South Republican SWA--Hale Crossroads Yuma
  286. Black-throated Green Warbler Setophaga virens
    # Count: 1
    Date:
    Observer: David Dowell
    Location: South Republican SWA--Hale Crossroads Yuma
  287. Great Blue Heron Ardea herodias
    # Count: 31
    Date:
    Observer: Tony Downs
    Location: Rabbit Mountain Boulder
  288. Greater Prairie-Chicken Tympanuchus cupido
    # Count: 11
    Date:
    Observer: robert beauchamp
    Location: Playa at Sedgwick CRs 23 & 12 Sedgwick
  289. Grasshopper Sparrow Ammodramus savannarum
    # Count: 5
    Date:
    Observer: robert beauchamp
    Location: Playa at Sedgwick CRs 23 & 12 Sedgwick
  290. Clay-colored Sparrow Spizella pallida
    # Count: 8
    Date:
    Observer: Nathan Pieplow
    Location: Jumbo Reservoir (Logan Co) Logan
  291. Western Cattle Egret Bubulcus ibis
    # Count: 6
    Date:
    Observer: Andrew Rothman
    Location: First Creek at Green Valley Ranch Denver
  292. Northern Saw-whet Owl Aegolius acadicus
    # Count: 1
    Date:
    Observer: Sue Riffe
    Location: Medicine Bow-Routt National Forests, Kremmling US-CO 40.35611, -106.57963 Grand
  293. Greater Sage-Grouse Centrocercus urophasianus
    # Count: 54
    Date:
    Observer: Andrew Spencer
    Location: Coalmont Lek Jackson
  294. American Three-toed Woodpecker Picoides dorsalis
    # Count: 4
    Date:
    Observer: Josh Bruening
    Location: Arapaho Larimer
  295. Pine Grosbeak Pinicola enucleator
    # Count: 4
    Date:
    Observer: Josh Bruening
    Location: Arapaho Larimer
  296. Common Poorwill Phalaenoptilus nuttallii
    # Count: 5
    Date:
    Observer: Tyler Stuart
    Location: Blodgett Peak Open Space El Paso
  297. Virginia Rail Rallus limicola
    # Count: 4
    Date:
    Observer: Beth Sage
    Location: Cherry Creek SP Arapahoe
  298. Barn Owl Tyto alba
    # Count: 2
    Date:
    Observer: Edward Raynor
    Location: 2698 Bluestem Willow Dr, Loveland US-CO 40.42024, -105.01239 Larimer
  299. Townsend's Solitaire Myadestes townsendi
    # Count: 3
    Date:
    Observer: Anonymous eBirder
    Location: Upper Loop Trail Gunnison
  300. Long-eared Owl Asio otus
    # Count: 1
  301. Black Rail Laterallus jamaicensis
    # Count: 1

Exotic: Provisional (1)

  1. Ring-necked Pheasant Phasianus colchicus
    # Count: 6
    Date:
    Observer: Eric DeFonso 🦑
    Location: South Republican SWA--Wagon Wheel Campground area Yuma

Exotic: Escapee (2)

  1. Mute Swan Cygnus olor
    # Count: 2
    Date:
    Observer: Lori Pivonka
    Location: “F” Street Ponds; Greeley US-CO (40.4426,-104.7529) Weld
  2. Graylag Goose Anser anser
    # Count: 2
    Date:
    Observer: Lake Watch
    Location: Denver City Park Denver

Hybrids (8)

  1. Glossy x White-faced Ibis (hybrid) Plegadis falcinellus x chihi
    # Count: 1
    Date:
    Observer: Mark Peterson
    Location: Patent Creek Playa, Yuma CR 58 Yuma
  2. Lazuli x Indigo Bunting (hybrid) Passerina amoena x cyanea
    # Count: 1
    Date:
    Observer: Cody Ensanian
    Location: Sondermann Park El Paso
  3. Graylag x Swan Goose (hybrid) Anser anser x cygnoides
    # Count: 2
    Date:
    Observer: Gabriella Blanchard
    Location: 2001 Steele Street, Denver, Colorado, US (39.748, -104.953) Denver
  4. Black x Eastern Phoebe (hybrid) Sayornis nigricans x phoebe
    # Count: 1
    Date:
    Observer: Santi Tabares
    Location: South Platte Park Arapahoe
  5. Graylag x Canada Goose (hybrid) Anser anser x Branta canadensis
    # Count: 1
    Date:
    Observer: Brittany Backer
    Location: Belmar Park, Lakewood US-CO 39.70495, -105.08914 Jefferson
  6. Western x Clark's Grebe (hybrid) Aechmophorus occidentalis x clarkii
    # Count: 1
    Date:
    Observer: Oliver Komar
    Location: Walden Reservoir Jackson
  7. Spotted x Eastern Towhee (hybrid) Pipilo maculatus x erythrophthalmus
    # Count: 1
    Date:
    Observer: David Trevino
    Location: 34101–34123 County Road W7, Snyder US-CO 40.37705, -103.50087 Morgan
  8. Bullock's x Baltimore Oriole (hybrid) Icterus bullockii x galbula
    # Count: 2
    Date:
    Observer: Charles Hundertmark
    Location: Prewitt Reservoir SWA (Washington Co) Washington

Additional Taxa (75)

  1. shorebird sp. Charadriiformes sp.
    # Count: 6
    Date:
    Observer: Colleen Kulesza
    Location: Clear Creek Valley Park Adams
  2. Horned/Eared Grebe Podiceps auritus/nigricollis
    # Count: 1
    Date:
    Observer: Bethany Ferguson
    Location: Belmar Park Jefferson
  3. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    # Count: 3
    Date:
    Observer: Bethany Ferguson
    Location: Belmar Park Jefferson
  4. grackle sp. Quiscalus sp.
    # Count: 35
    Date:
    Observer: Jane Stulp
    Location: Farm Yard Prowers
  5. Gray/Dusky Flycatcher Empidonax wrightii/oberholseri
    # Count: 1
    Date:
    Observer: Chipper Phillips
    Location: Interlocken--Central Park Broomfield
  6. Rusty/Brewer's Blackbird Euphagus carolinus/cyanocephalus
    # Count: 2
    Date:
    Observer: Mindy Mueller
    Location: Quincy Reservoir Arapahoe
  7. raven sp. Corvus sp. (raven sp.)
    # Count: 2
    Date:
    Observer: Michael Lester
    Location: Two Buttes SWA--below dam Baca
  8. Spizella sp./American Tree Sparrow Spizella/Spizelloides sp.
    # Count: 5
    Date:
    Observer: Doug Schoch
    Location: Cherry Creek SP Arapahoe
  9. Buteo sp. Buteo sp.
    # Count: 1
    Date:
    Observer: Diane Birks
    Location: Union Reservoir Weld
  10. falcon sp. Falco sp.
    # Count: 1
    Date:
    Observer: Peter Stoltz
    Location: First Creek at Green Valley Ranch Denver
  11. blackbird sp. Icteridae sp.
    # Count: 100
    Date:
    Observer: Micah Helton
    Location: Zink's Pond La Plata
  12. Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalus
    # Count: 2
    Date:
    Observer: mark wagner
    Location: Running Deer & Cottonwood Hollow Natural Areas Larimer
  13. Greater/Lesser Scaup Aythya marila/affinis
    # Count: 10
    Date:
    Observer: Jamey Hastings
    Location: Eleven Mile SP Park
  14. Accipiter sp. Accipiter sp.
    # Count: 1
    Date:
    Observer: Carol Bylsma
    Location: 28550 County Road T5, Dolores US-CO 37.45898, -108.52626 Montezuma
  15. sapsucker sp. Sphyrapicus sp.
    # Count: 1
    Date:
    Observer: Lisa Brin
    Location: Independence Trail Hinsdale
  16. large shorebird sp. Scolopacidae sp. (large shorebird sp.)
    # Count: 2
    Date:
    Observer: Anonymous eBirder
    Location: Sweitzer Lake SP Delta
  17. new world sparrow sp. Passerellidae sp.
    # Count: 6
    Date:
    Observer: Anonymous eBirder
    Location: Sweitzer Lake SP Delta
  18. hummingbird sp. Trochilidae sp.
    # Count: 3
    Date:
    Observer: Rudy Sanchez
    Location: Backcountry, Highlands Ranch, CO 80126 Douglas
  19. Streptopelia sp. Streptopelia sp.
    # Count: 1
    Date:
    Observer: Ted Floyd
    Location: Waneka Lake/Greenlee Preserve--Greenlee Only Boulder
  20. passerine sp. Passeriformes sp.
    # Count: 5
    Date:
    Observer: Ted Floyd
    Location: Waneka Lake/Greenlee Preserve--Greenlee Only Boulder
  21. Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperii
    # Count: 1
    Date:
    Observer: Rhonda & Leonard Horwitz-Romano
    Location: 466 Coyote Cir, Black Hawk US-CO 39.83264, -105.48690 Gilpin
  22. nuthatch sp. Sitta sp.
    # Count: 2
    Date:
    Observer: Rhonda & Leonard Horwitz-Romano
    Location: 466 Coyote Cir, Black Hawk US-CO 39.83264, -105.48690 Gilpin
  23. Haemorhous sp. Haemorhous sp.
    # Count: 1
    Date:
    Observer: Leah Waldner
    Location: 4307–4345 45 Rd, De Beque US-CO 39.36385, -108.24971 Mesa
  24. woodpecker sp. Picidae sp.
    # Count: 1
    Date:
    Observer: Mike Henwood
    Location: Divide Road--Telephone Trail to Uranium Road #404 Mesa
  25. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    # Count: 60
    Date:
    Observer: Ann Mossman
    Location: Walden Reservoir--SE side Jackson
  26. Glossy/White-faced Ibis Plegadis falcinellus/chihi
    # Count: 32
    Date:
    Observer: Melissa May
    Location: Zink's Pond La Plata
  27. phalarope sp. Phalaropus sp.
    # Count: 30
    Date:
    Observer: David de Rivera Tønnessen
    Location: Arapaho NWR--Auto Loop Jackson
  28. swallow sp. Hirundinidae sp.
    # Count: 400
    Date:
    Observer: David de Rivera Tønnessen
    Location: Arapaho NWR--Auto Loop Jackson
  29. yellow-bellied kingbird sp. Tyrannus sp. (yellow-bellied)
    # Count: 2
    Date:
    Observer: Tricia Lewis
    Location: Cherry Creek Trail--Bayou Gulch Rd to Stroh Rd Douglas
  30. new world oriole sp. Icterus sp.
    # Count: 1
    Date:
    Observer: David Dowell
    Location: Wray Fish Hatchery Yuma
  31. Blue-winged/Cinnamon Teal Spatula discors/cyanoptera
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: 80011, Aurora US-CO 39.73843, -104.77736 Arapahoe
  32. Larus sp. Larus sp.
    # Count: 2
    Date:
    Observer: Alan Versaw
    Location: Lake Pueblo SP--Valco Ponds Pueblo
  33. Yellow-crowned/Black-crowned Night Heron Nycticorax nycticorax/Nyctanassa violacea
    # Count: 1
    Date:
    Observer: Fiona Lien
    Location: First Creek at Green Valley Ranch Denver
  34. eagle sp. Accipitridae sp. (eagle sp.)
    # Count: 2
    Date:
    Observer: Kim Weber
    Location: Memorial Park & Prospect Lake El Paso
  35. Passerina sp. Passerina sp.
    # Count: 2
    Date:
    Observer: Matt Gray
    Location: Colorado NM--Devil's Kitchen Trail Mesa
  36. Cassin's/Western Kingbird Tyrannus vociferans/verticalis
    # Count: 2
    Date:
    Observer: Annie Reeves
    Location: Animas River--Santa Rita Park area La Plata
  37. vireo sp. Vireo sp.
    # Count: 1
    Date:
    Observer: Annie Reeves
    Location: Animas River--Santa Rita Park area La Plata
  38. Downy/Hairy Woodpecker Dryobates pubescens/villosus
    # Count: 1
    Date:
    Observer: Gigi Zarzuela
    Location: Roxborough SP Douglas
  39. Double-crested/Neotropic Cormorant Nannopterum auritum/brasilianum
    # Count: 10
    Date:
    Observer: Jeremy Webster
    Location: Van's Grove (Bent CR JJ, east of Ft Lyon) Bent
  40. Sedge/Marsh Wren Cistothorus stellaris/palustris
    # Count: 2
    Date:
    Observer: Dani Flores
    Location: Fossil Creek Reservoir Natural Area--West Blind Larimer
  41. wren sp. Troglodytidae sp.
    # Count: 2
    Date:
    Observer: Kristin Mobley
    Location: Chatfield SP--Campground Douglas
  42. new world warbler sp. Parulidae sp.
    # Count: 2
    Date:
    Observer: Kristin Mobley
    Location: Chatfield SP--Campground Douglas
  43. Cackling/Canada Goose Branta hutchinsii/canadensis
    # Count: 20
    Date:
    Observer: Jenn Fields
    Location: Pella Crossing Open Space Boulder
  44. new world flycatcher sp. Tyrannidae sp.
    # Count: 4
    Date:
    Observer: Ron Bolton
    Location: Pawnee NG--Crow Valley CG Weld
  45. crow/raven sp. Corvus sp.
    # Count: 3
    Date:
    Observer: Bill Kneeland
    Location: Barr Lake SP Adams
  46. Spizella sp. Spizella sp.
    # Count: 5
    Date:
    Observer: David Dowell
    Location: South Republican SWA--Foster Grove Yuma
  47. peep sp. Calidris sp. (peep sp.)
    # Count: 4
    Date:
    Observer: Logan Wagner
    Location: De Beque, Colorado, US (39.306, -108.223) Mesa
  48. owl sp. Strigiformes sp.
    # Count: 2
    Date:
    Observer: Sandra Jacobs
    Location: 7226 Pine Bluff Dr. E Pueblo
  49. Bullock's/Baltimore Oriole Icterus bullockii/galbula
    # Count: 2
    Date:
    Observer: Sandra Jacobs
    Location: 7226 Pine Bluff Dr. E Pueblo
  50. Empidonax sp. Empidonax sp.
    # Count: 2
    Date:
    Observer: Linda Hodges
    Location: Chico Basin Ranch--wooded areas (El Paso Co) (mandatory registration required at www.aikenaudubon.com) El Paso
  51. Rose-breasted/Black-headed Grosbeak Pheucticus ludovicianus/melanocephalus
    # Count: 1
    Date:
    Observer: Katy Garon
    Location: Washington Park Denver
  52. finch sp. Fringillidae sp.
    # Count: 2
    Date:
    Observer: Anonymous eBirder
    Location: BVHS Nature Area Trail & Marquard Nature Area Chaffee
  53. pigeon/dove sp. Columbidae sp.
    # Count: 8
    Date:
    Observer: Virginia Dickinson
    Location: Sand Creek--Havana St. to Westerly Creek Denver
  54. tanager sp. (Piranga sp.) Piranga sp.
    # Count: 1
    Date:
    Observer: Chris Goulart
    Location: Lamar Community College, Lamar US-CO 38.07042, -102.61590 Prowers
  55. heron sp. Ardeidae sp.
    # Count: 1
    Date:
    Observer: Forrest Luke
    Location: CR-184, Craig US-CO 40.49573, -107.53585 Moffat
  56. Black-capped/Mountain Chickadee Poecile atricapillus/gambeli
    # Count: 12
    Date:
    Observer: Chad Wright
    Location: 515 N Sheridan Ave, Colorado Springs US-CO 38.84091, -104.80147 El Paso
  57. dabbling duck sp. Anatidae sp. (dabbling duck sp.)
    # Count: 15
    Date:
    Observer: Ted Floyd
    Location: Teller Lake Boulder
  58. Ruby-throated/Black-chinned Hummingbird Archilochus colubris/alexandri
    # Count: 2
    Date:
    Observer: Al Kaltenback
    Location: dawsonrd Douglas
  59. towhee sp. Melozone/Pipilo sp.
    # Count: 2
    Date:
    Observer: Sydney McBrayer
    Location: home Pitkin
  60. teal sp. Anatidae sp. (teal sp.)
    # Count: 1
    Date:
    Observer: Brett Walker
    Location: Horsethief Canyon SWA Mesa
  61. Common/Red-breasted Merganser Mergus merganser/serrator
    # Count: 2
    Date:
    Observer: Greg Ruterbories
    Location: Bluff Lake Nature Center Denver
  62. Tree/Violet-green Swallow Tachycineta bicolor/thalassina
    # Count: 30
    Date:
    Observer: Russ Meller
    Location: Eldorado Mountain Open Space--Fowler Trail Boulder
  63. goose sp. Anatidae (goose sp.)
    # Count: 15
    Date:
    Observer: Corryn DePlonty
    Location: Big Dry Creek Park, Westminster US-CO 39.92772, -105.00952 Adams
  64. Lincoln's/Swamp Sparrow Melospiza lincolnii/georgiana
    # Count: 1
    Date:
    Observer: Karen Smith
    Location: Wheat Ridge Greenbelt Jefferson
  65. Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseri
    # Count: 3
    Date:
    Observer: Christopher Murray
    Location: Lon Hagler Reservoir SWA Larimer
  66. large falcon sp. Falco sp. (large falcon sp.)
    # Count: 1
    Date:
    Observer: Tyler Stuart
    Location: Fountain Creek Regional Park--Willow Spring Rd. area El Paso
  67. Catharus sp. Catharus sp.
    # Count: 2
    Date:
    Observer: Thaddeus Wells
    Location: Barr Lake SP Adams
  68. thrush sp. Turdidae sp.
    # Count: 2
    Date:
    Observer: Denver Field Ornithologists
    Location: Barr Lake SP Adams
  69. rosy-finch sp. Leucosticte sp.
    # Count: 60
    Date:
    Observer: Bryan Gieszl
    Location: Home Pitkin
  70. Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceus
    # Count: 4
    Date:
    Observer: JoAnn Hackos
    Location: Pawnee NG--Weld CR 45 from CR 114 to 122 Weld
  71. gull sp. Larinae sp.
    # Count: 40
    Date:
    Observer: John Shenot
    Location: Dixon Reservoir Larimer
  72. hawk sp. Accipitridae sp. (hawk sp.)
    # Count: 4
    Date:
    Observer: Carolyn Goodwin
    Location: River's Edge Natural Area Larimer
  73. Setophaga sp. Setophaga sp.
    # Count: 1
    Date:
    Observer: jim wood
    Location: 13967–13975 SH-347, Montrose US-CO 38.48929, -107.74071 Montrose
  74. Domestic goose sp. (Domestic type) Anser sp. (Domestic type)
    # Count: 4
    Date:
    Observer: Eric Spink
    Location: Sands Lake SWA Chaffee
  75. duck sp. Anatidae (duck sp.)
    # Count: 12
    Date:
    Observer: Cole Sage
    Location: Cherry Creek SP--Prairie Loop Arapahoe