Menu
The Cornell Lab
The Cornell Lab

The Cornell Lab of Ornithology builds the eBird global platform for communities and partners around the world to advance data-driven science, education, and conservation.

Change Region

Change Region

Weld

Map

Explore...

Bird List

Updated ~2 days ago
395 All Years 253 This Year 2024 127 This Month Jun 2024
Last Observed First Observed High Count

Custom Time Period

Change Time Period

Sort by

  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (126)

  1. Canada Goose Branta canadensis
    # Count: 8
    Date:
    Observer: John Vanderpoel
    Location: St. Vrain SP
  2. Wood Duck Aix sponsa
    # Count: 1
    Date:
    Observer: Cole Wild
    Location: Windsor Reservoir
  3. Blue-winged Teal Spatula discors
    # Count: 13
    Date:
    Observer: Mark Hedden
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  4. Cinnamon Teal Spatula cyanoptera
    # Count: 6
    Date:
    Observer: Benjamin Zerante
    Location: Stewart's Pond
  5. Northern Shoveler Spatula clypeata
    # Count: 2
    Date:
    Observer: Mark Hedden
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  6. Gadwall Mareca strepera
    # Count: 1
    Date:
    Observer: Mark Hedden
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  7. Mallard Anas platyrhynchos
    # Count: 2
    Date:
    Observer: Mark Hedden
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  8. Northern Pintail Anas acuta
    # Count: 5
    Date:
    Observer: Lorraine Lanning
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture
  9. Green-winged Teal Anas crecca
    # Count: 2
    Date:
    Observer: Angelo DelloMargio
    Location: Pawnee NG--Weld CR 47 near CR 116
  10. Redhead Aythya americana
    # Count: 1
    Date:
    Observer: Jennie Duberstein
    Location: Stewart's Pond
  11. Hooded Merganser Lophodytes cucullatus
    # Count: 1
    Date:
    Observer: Kyle Johnson
    Location: Loloff Reservoir
  12. Ruddy Duck Oxyura jamaicensis
    # Count: 1
    Date:
    Observer: Benjamin Zerante
    Location: Stewart's Pond
  13. Wild Turkey Meleagris gallopavo
    # Count: 2
    Date:
    Observer: Doug Goodwin
    Location: Sandstone Ranch
  14. Pied-billed Grebe Podilymbus podiceps
    # Count: 2
    Date:
    Observer: Jun Tsuchiya
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  15. Eared Grebe Podiceps nigricollis
    # Count: 12
    Date:
    Observer: Benjamin Zerante
    Location: Stewart's Pond
  16. Western Grebe Aechmophorus occidentalis
    # Count: 16
    Date:
    Observer: Cole Wild
    Location: Windsor Reservoir
  17. Clark's Grebe Aechmophorus clarkii
    # Count: 1
    Date:
    Observer: John Rutenbeck
    Location: Union Reservoir
  18. Rock Pigeon Columba livia
    # Count: 6
    Date:
    Observer: Winston Liu
    Location: Coal Creek Trail--Erie
  19. Eurasian Collared-Dove Streptopelia decaocto
    # Count: 1
    Date:
    Observer: Caleb Stewart
    Location: Toru
  20. Mourning Dove Zenaida macroura
    # Count: 1
    Date:
    Observer: Caleb Stewart
    Location: Toru-backyard
  21. Common Nighthawk Chordeiles minor
    # Count: 1
    Date:
    Observer: woody wheeler
    Location: Pawnee NG--Crow Valley CG
  22. Chimney Swift Chaetura pelagica
    # Count: 1
    Date:
    Observer: Ginny Keeling
    Location: 42315 County Road 133, New Raymer US-CO 40.61392, -103.80196
  23. Black-chinned Hummingbird Archilochus alexandri
    # Count: 1
    Date:
    Observer: Jeff Percell
    Location: Percell Backyard, Northridge, Erie, Colorado, US (40.065, -105.042)
  24. Broad-tailed Hummingbird Selasphorus platycercus
    # Count: 1
    Date:
    Observer: Winston Liu
    Location: Coal Creek Trail--Vista Pkwy to Erie Pkwy
  25. Virginia Rail Rallus limicola
    # Count: 1
    Date:
    Observer: Marisa Windell
    Location: Union Reservoir
  26. Sora Porzana carolina
    # Count: 1
    Date:
    Observer: Marisa Windell
    Location: Union Reservoir
  27. American Coot Fulica americana
    # Count: 3
    Date:
    Observer: Jun Tsuchiya
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  28. Black-necked Stilt Himantopus mexicanus
    # Count: 2
    Date:
    Observer: Jennie Duberstein
    Location: Lower Latham Reservoir area
  29. American Avocet Recurvirostra americana
    # Count: 1
    Date:
    Observer: Mike Serruto
    Location: Beebe Draw area
  30. Killdeer Charadrius vociferus
    # Count: 6
    Date:
    Observer: Mark Hedden
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  31. Mountain Plover Anarhynchus montanus
    # Count: 1
    Date:
    Observer: Angelo DelloMargio
    Location: Briggsdale (town)
  32. Long-billed Curlew Numenius americanus
    # Count: 1
    Date:
    Observer: Paul Poronto
    Location: Pawnee NG Bird Tour—CR-57
  33. Wilson's Phalarope Phalaropus tricolor
    # Count: 1
    Date:
    Observer: Mike Serruto
    Location: Beebe Draw area
  34. Spotted Sandpiper Actitis macularius
    # Count: 1
    Date:
    Observer: Benjamin Zerante
    Location: Stewart's Pond
  35. White-rumped Sandpiper Calidris fuscicollis
    # Count: 1
    Date:
    Observer: Benjamin Zerante
    Location: Stewart's Pond
  36. Double-crested Cormorant Nannopterum auritum
    # Count: 1
    Date:
    Observer: John Vanderpoel
    Location: St. Vrain SP
  37. American White Pelican Pelecanus erythrorhynchos
    # Count: 1
    Date:
    Observer: John Vanderpoel
    Location: St. Vrain SP
  38. Black-crowned Night Heron Nycticorax nycticorax
    # Count: 4
    Date:
    Observer: Ted Floyd
    Location: Coal Creek Trail--Erie
  39. Snowy Egret Egretta thula
    # Count: 5
    Date:
    Observer: Ted Floyd
    Location: Coal Creek Trail--Erie
  40. Green Heron Butorides virescens
    # Count: 1
    Date:
    Observer: Jamie Simo
    Location: St. Vrain SP
  41. Great Egret Ardea alba
    # Count: 3
    Date:
    Observer: Cole Wild
    Location: Windsor Reservoir
  42. Great Blue Heron Ardea herodias
    # Count: 1
    Date:
    Observer: Warren Parker
    Location: Firestone US-CO
  43. Turkey Vulture Cathartes aura
    # Count: X
    Date:
    Observer: Anonymous eBirder
    Location: Sandstone Ranch
  44. Osprey Pandion haliaetus
    # Count: 1
    Date:
    Observer: John Vanderpoel
    Location: St. Vrain SP
  45. Golden Eagle Aquila chrysaetos
    # Count: 1
    Date:
    Observer: Michael Heaney
    Location: 39000–39186 US-34, Orchard US-CO 40.29385, -104.30507
  46. Northern Harrier Circus hudsonius
    # Count: 1
    Date:
    Observer: Angelo DelloMargio
    Location: Pawnee NG Bird Tour—Stops 5-8
  47. Cooper's Hawk Accipiter cooperii
    # Count: 1
    Date:
    Observer: Tom Lally
    Location: Ault US-CO 40.58237, -104.73395
  48. Bald Eagle Haliaeetus leucocephalus
    # Count: 2
    Date:
    Observer: Joe Kipper
    Location: Swan Pond, F Street, Greeley, Colorado, US (40.443, -104.754)
  49. Swainson's Hawk Buteo swainsoni
    # Count: 5
    Date:
    Observer: woody wheeler
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture
  50. Red-tailed Hawk Buteo jamaicensis
    # Count: 1
    Date:
    Observer: woody wheeler
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture
  51. Ferruginous Hawk Buteo regalis
    # Count: 1
    Date:
    Observer: woody wheeler
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture
  52. Barn Owl Tyto alba
    # Count: 3
    Date:
    Observer: Ted Floyd
    Location: Coal Creek Trail--Erie
  53. Great Horned Owl Bubo virginianus
    # Count: 1
    Date:
    Observer: Winston Liu
    Location: Coal Creek Trail--Vista Pkwy to Erie Pkwy
  54. Burrowing Owl Athene cunicularia
    # Count: 1
    Date:
    Observer: woody wheeler
    Location: Pawnee NG Bird Tour—Stops 5-8
  55. Belted Kingfisher Megaceryle alcyon
    # Count: 1
    Date:
    Observer: Joe Kipper
    Location: Swan Pond, F Street, Greeley, Colorado, US (40.443, -104.754)
  56. Red-headed Woodpecker Melanerpes erythrocephalus
    # Count: 1
    Date:
    Observer: Linda Lee
    Location: 16799-16083 County Road 122, Carr, Colorado, US (40.87, -104.755)
  57. Downy Woodpecker Dryobates pubescens
    # Count: 2
    Date:
    Observer: Cole Wild
    Location: Frank SWA (Weld Co)
  58. Northern Flicker Colaptes auratus
    # Count: 1
    Date:
    Observer: Mike Serruto
    Location: Pawnee NG--Crow Valley CG
  59. American Kestrel Falco sparverius
    # Count: 1
    Date:
    Observer: Cole Wild
    Location: Windsor Reservoir
  60. Prairie Falcon Falco mexicanus
    # Count: 1
    Date:
    Observer: Lane Theander
    Location: Pawnee NG Bird Tour—Stops 9-11 (CR-104)
  61. Olive-sided Flycatcher Contopus cooperi
    # Count: 1
    Date:
    Observer: Sue Riffe
    Location: Pawnee NG--Crow Valley CG
  62. Western Wood-Pewee Contopus sordidulus
    # Count: 2
    Date:
    Observer: woody wheeler
    Location: Pawnee NG--Crow Valley CG
  63. Willow Flycatcher Empidonax traillii
    # Count: 1
    Date:
    Observer: Ted Floyd
    Location: Coal Creek Trail--Erie
  64. Say's Phoebe Sayornis saya
    # Count: 1
    Date:
    Observer: Angelo DelloMargio
    Location: Briggsdale (town)
  65. Western Kingbird Tyrannus verticalis
    # Count: 8
    Date:
    Observer: woody wheeler
    Location: Pawnee NG--Crow Valley CG
  66. Eastern Kingbird Tyrannus tyrannus
    # Count: 1
    Date:
    Observer: Mark Hedden
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  67. Warbling Vireo Vireo gilvus
    # Count: 2
    Date:
    Observer: Joe Kipper
    Location: Swan Pond, F Street, Greeley, Colorado, US (40.443, -104.754)
  68. Loggerhead Shrike Lanius ludovicianus
    # Count: 3
    Date:
    Observer: Angelo DelloMargio
    Location: County Road 122 (Owl Creek to Eastman Creek), Nunn US-CO 40.87005, -104.69095
  69. Blue Jay Cyanocitta cristata
    # Count: 4
    Date:
    Observer: Caleb Stewart
    Location: Toru
  70. Black-billed Magpie Pica hudsonia
    # Count: 7
    Date:
    Observer: Winston Liu
    Location: Coal Creek Trail--Erie
  71. American Crow Corvus brachyrhynchos
    # Count: 1
    Date:
    Observer: Jeff Percell
    Location: Northridge Loop
  72. Common Raven Corvus corax
    # Count: 1
    Date:
    Observer: Eric Walters
    Location: Pawnee NG Bird Tour—CR-57
  73. Black-capped Chickadee Poecile atricapillus
    # Count: 1
    Date:
    Observer: woody wheeler
    Location: Pawnee NG--Crow Valley CG
  74. Horned Lark Eremophila alpestris
    # Count: 1
    Date:
    Observer: Mark Hedden
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  75. Bank Swallow Riparia riparia
    # Count: 1
    Date:
    Observer: John Vanderpoel
    Location: St. Vrain SP
  76. Tree Swallow Tachycineta bicolor
    # Count: 2
    Date:
    Observer: Cole Wild
    Location: Windsor Reservoir
  77. Northern Rough-winged Swallow Stelgidopteryx serripennis
    # Count: 3
    Date:
    Observer: Winston Liu
    Location: Coal Creek Trail--Erie
  78. Barn Swallow Hirundo rustica
    # Count: 2
    Date:
    Observer: John Vanderpoel
    Location: St. Vrain SP
  79. Cliff Swallow Petrochelidon pyrrhonota
    # Count: X
    Date:
    Observer: Warren Parker
    Location: Firestone US-CO
  80. Bushtit Psaltriparus minimus
    # Count: 1
    Date:
    Observer: Winston Liu
    Location: Coal Creek Trail--Vista Pkwy to Erie Pkwy
  81. Red-breasted Nuthatch Sitta canadensis
    # Count: 1
    Date:
    Observer: Caleb Stewart
    Location: Toru
  82. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: X
    Date:
    Observer: Caitlin Bergeron
    Location: Home
  83. Rock Wren Salpinctes obsoletus
    # Count: X
    Date:
    Observer: Anonymous eBirder
    Location: Sandstone Ranch
  84. House Wren Troglodytes aedon
    # Count: 3
    Date:
    Observer: woody wheeler
    Location: Pawnee NG--Crow Valley CG
  85. Marsh Wren Cistothorus palustris
    # Count: 1
    Date:
    Observer: Lane Theander
    Location: Lower Latham Reservoir area
  86. European Starling Sturnus vulgaris
    # Count: 1
    Date:
    Observer: Warren Parker
    Location: Firestone US-CO
  87. Gray Catbird Dumetella carolinensis
    # Count: 1
    Date:
    Observer: Winston Liu
    Location: Coal Creek Trail--Vista Pkwy to Erie Pkwy
  88. Brown Thrasher Toxostoma rufum
    # Count: 2
    Date:
    Observer: woody wheeler
    Location: Pawnee NG--Crow Valley CG
  89. Northern Mockingbird Mimus polyglottos
    # Count: 3
    Date:
    Observer: woody wheeler
    Location: Pawnee NG--Crow Valley CG
  90. Swainson's Thrush Catharus ustulatus
    # Count: 1
    Date:
    Observer: Arvind Panjabi
    Location: Pawnee NG--Crow Valley CG
  91. Hermit Thrush Catharus guttatus
    # Count: 1
    Date:
    Observer: Ann Colpitts
    Location: Pawnee NG--Crow Valley CG
  92. American Robin Turdus migratorius
    # Count: 1
    Date:
    Observer: woody wheeler
    Location: Pawnee NG Bird Tour--Stops 12-13 (CR-61)
  93. Cedar Waxwing Bombycilla cedrorum
    # Count: 1
    Date:
    Observer: David Fraide
    Location: Salazar way
  94. House Sparrow Passer domesticus
    # Count: 18
    Date:
    Observer: Angelo DelloMargio
    Location: Briggsdale (town)
  95. House Finch Haemorhous mexicanus
    # Count: 1
    Date:
    Observer: Caleb Stewart
    Location: Toru-backyard
  96. American Goldfinch Spinus tristis
    # Count: 1
    Date:
    Observer: Caleb Stewart
    Location: Toru
  97. Chestnut-collared Longspur Calcarius ornatus
    # Count: 8
    Date:
    Observer: Mike Serruto
    Location: Pawnee NG--Weld CR 45 from CR 114 to 122
  98. Thick-billed Longspur Rhynchophanes mccownii
    # Count: 25
    Date:
    Observer: Mike Serruto
    Location: Pawnee NG--Weld CR 45 from CR 114 to 122
  99. Cassin's Sparrow Peucaea cassinii
    # Count: 7
    Date:
    Observer: Angelo DelloMargio
    Location: County Road 69 to Pawnee NG Auto Tour Stop 5, Briggsdale US-CO 40.64318, -104.41127
  100. Grasshopper Sparrow Ammodramus savannarum
    # Count: 3
    Date:
    Observer: Angelo DelloMargio
    Location: County Road 69 to Pawnee NG Auto Tour Stop 5, Briggsdale US-CO 40.64318, -104.41127
  101. Chipping Sparrow Spizella passerina
    # Count: 1
    Date:
    Observer: Ann Colpitts
    Location: Pawnee NG--Crow Valley CG
  102. Brewer's Sparrow Spizella breweri
    # Count: 1
    Date:
    Observer: Angelo DelloMargio
    Location: County Road 69 to Pawnee NG Auto Tour Stop 5, Briggsdale US-CO 40.64318, -104.41127
  103. Lark Sparrow Chondestes grammacus
    # Count: 1
    Date:
    Observer: woody wheeler
    Location: Pawnee NG--Crow Valley CG
  104. Lark Bunting Calamospiza melanocorys
    # Count: 2
    Date:
    Observer: woody wheeler
    Location: Pawnee NG Bird Tour--Stops 12-13 (CR-61)
  105. Vesper Sparrow Pooecetes gramineus
    # Count: 1
    Date:
    Observer: Angelo DelloMargio
    Location: County Road 69 to Pawnee NG Auto Tour Stop 5, Briggsdale US-CO 40.64318, -104.41127
  106. Savannah Sparrow Passerculus sandwichensis
    # Count: 1
    Date:
    Observer: Marisa Windell
    Location: Union Reservoir
  107. Song Sparrow Melospiza melodia
    # Count: 1
    Date:
    Observer: Winston Liu
    Location: Coal Creek Trail--Erie
  108. Green-tailed Towhee Pipilo chlorurus
    # Count: 1
    Date:
    Observer: Winston Liu
    Location: Coal Creek Trail--Vista Pkwy to Erie Pkwy
  109. Spotted Towhee Pipilo maculatus
    # Count: 1
    Date:
    Observer: Jeff Percell
    Location: Northridge Loop
  110. Yellow-breasted Chat Icteria virens
    # Count: 1
    Date:
    Observer: Winston Liu
    Location: Coal Creek Trail--Vista Pkwy to Erie Pkwy
  111. Yellow-headed Blackbird Xanthocephalus xanthocephalus
    # Count: 2
    Date:
    Observer: Mark Hedden
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  112. Western Meadowlark Sturnella neglecta
    # Count: 3
    Date:
    Observer: Mark Hedden
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  113. Orchard Oriole Icterus spurius
    # Count: 1
    Date:
    Observer: Cole Wild
    Location: Frank SWA (Weld Co)
  114. Bullock's Oriole Icterus bullockii
    # Count: 1
    Date:
    Observer: woody wheeler
    Location: Pawnee NG--Crow Valley CG
  115. Red-winged Blackbird Agelaius phoeniceus
    # Count: 1
    Date:
    Observer: Mark Hedden
    Location: Pawnee NG--Adams and Bunker Reservoir Number 1
  116. Brown-headed Cowbird Molothrus ater
    # Count: 1
    Date:
    Observer: woody wheeler
    Location: Pawnee NG Bird Tour--Stops 12-13 (CR-61)
  117. Brewer's Blackbird Euphagus cyanocephalus
    # Count: 4
    Date:
    Observer: Steven Scott
    Location: US-85, Carr US-CO 40.75596, -104.79144
  118. Common Grackle Quiscalus quiscula
    # Count: 8
    Date:
    Observer: woody wheeler
    Location: Pawnee NG--Crow Valley CG
  119. Great-tailed Grackle Quiscalus mexicanus
    # Count: 1
    Date:
    Observer: Lane Theander
    Location: Lower Latham Reservoir area
  120. Common Yellowthroat Geothlypis trichas
    # Count: 1
    Date:
    Observer: Winston Liu
    Location: Coal Creek Trail--Vista Pkwy to Erie Pkwy
  121. Yellow Warbler Setophaga petechia
    # Count: 2
    Date:
    Observer: woody wheeler
    Location: Pawnee NG--Crow Valley CG
  122. Western Tanager Piranga ludoviciana
    # Count: 1
    Date:
    Observer: Joey Angstman
    Location: 80634, Greeley US-CO (40.4114,-104.8032)
  123. Black-headed Grosbeak Pheucticus melanocephalus
    # Count: 2
    Date:
    Observer: Cole Wild
    Location: Frank SWA (Weld Co)
  124. Blue Grosbeak Passerina caerulea
    # Count: 2
    Date:
    Observer: Cole Wild
    Location: Windsor Reservoir
  125. Lazuli Bunting Passerina amoena
    # Count: 1
    Date:
    Observer: Ted Floyd
    Location: Coal Creek Trail--Erie
  126. Dickcissel Spiza americana
    # Count: 1
    Date:
    Observer: Cole Wild
    Location: Windsor Reservoir

Exotic: Provisional (1)

  1. Ring-necked Pheasant Phasianus colchicus
    # Count: 1
    Date:
    Observer: Ted Floyd
    Location: Coal Creek Trail--Erie

Exotic: Escapee (2)

  1. Mute Swan Cygnus olor
    # Count: 2
    Date:
    Observer: Joe Kipper
    Location: Swan Pond, F Street, Greeley, Colorado, US (40.443, -104.754)
  2. Northern Bobwhite Colinus virginianus
    # Count: 1
    Date:
    Observer: Bruce Snyder
    Location: WCR 49 north of WCR 4

Additional Taxa (12)

  1. dabbling duck sp. Anatidae sp. (dabbling duck sp.)
    # Count: 1
    Date:
    Observer: John Vanderpoel
    Location: St. Vrain SP
  2. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    # Count: 7
    Date:
    Observer: Marisa Windell
    Location: Union Reservoir
  3. pigeon/dove sp. Columbidae sp.
    # Count: 1
    Date:
    Observer: Ted Floyd
    Location: Coal Creek Trail--Erie
  4. shorebird sp. Charadriiformes sp.
    # Count: 12
    Date:
    Observer: Benjamin Zerante
    Location: Stewart's Pond
  5. gull sp. Larinae sp.
    # Count: 2
    Date:
    Observer: Cynthia Lamb
    Location: The Wild Animal Sanctuary
  6. Double-crested/Neotropic Cormorant Nannopterum auritum/brasilianum
    # Count: 4
    Date:
    Observer: Patricia Ellis
    Location: 9513 East County Line Road, Longmont, Colorado, US (40.147, -105.055)
  7. Cassin's/Western Kingbird Tyrannus vociferans/verticalis
    # Count: 1
    Date:
    Observer: Ted Floyd
    Location: Pawnee NG Bird Tour--Stops 1-4 and Murphy's Pasture
  8. new world flycatcher sp. Tyrannidae sp.
    # Count: 2
    Date:
    Observer: Ted Floyd
    Location: Briggsdale (town)
  9. swallow sp. Hirundinidae sp.
    # Count: 1
    Date:
    Observer: Jeff Percell
    Location: Erie (town)
  10. new world goldfinch sp. Spinus sp. (goldfinch sp.)
    # Count: 1
    Date:
    Observer: Ted Floyd
    Location: Coal Creek Trail--Erie
  11. longspur sp. Calcarius/Rhynchophanes sp.
    # Count: 1
    Date:
    Observer: Nick Komar
    Location: Pawnee NG Bird Tour—Stops 9-11 (CR-104)
  12. new world sparrow sp. Passerellidae sp.
    # Count: 2
    Date:
    Observer: Ted Floyd
    Location: Coal Creek Trail--Erie