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Bird List

Updated ~15 hours ago
373 All Years 242 This Year 2024 195 This Month May 2024
Last Observed First Observed High Count

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  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (372)

  1. Canada Goose Branta canadensis
    # Count: 45
    Date:
    Observer: Deb Carstensen
    Location: Columbine Lakes ponds
  2. Wood Duck Aix sponsa
    # Count: 1
    Date:
    Observer: Deb Carstensen
    Location: Columbine Lakes ponds
  3. Mallard Anas platyrhynchos
    # Count: 2
    Date:
    Observer: Deb Carstensen
    Location: Columbine Lakes ponds
  4. Broad-tailed Hummingbird Selasphorus platycercus
    # Count: 3
    Date:
    Observer: Deb Carstensen
    Location: Columbine Lakes ponds
  5. Black-crowned Night Heron Nycticorax nycticorax
    # Count: 2
    Date:
    Observer: Deb Carstensen
    Location: Columbine Lakes ponds
  6. American Robin Turdus migratorius
    # Count: 3
    Date:
    Observer: Deb Carstensen
    Location: Columbine Lakes ponds
  7. Spotted Towhee Pipilo maculatus
    # Count: 2
    Date:
    Observer: Deb Carstensen
    Location: Columbine Lakes ponds
  8. Eurasian Collared-Dove Streptopelia decaocto
    # Count: 1
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  9. Mourning Dove Zenaida macroura
    # Count: 4
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  10. Spotted Sandpiper Actitis macularius
    # Count: 1
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  11. Least Sandpiper Calidris minutilla
    # Count: 1
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  12. Double-crested Cormorant Nannopterum auritum
    # Count: 2
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  13. Bald Eagle Haliaeetus leucocephalus
    # Count: 2
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  14. Belted Kingfisher Megaceryle alcyon
    # Count: 1
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  15. Western Kingbird Tyrannus verticalis
    # Count: 2
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  16. Northern Rough-winged Swallow Stelgidopteryx serripennis
    # Count: 4
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  17. Barn Swallow Hirundo rustica
    # Count: 3
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  18. Cliff Swallow Petrochelidon pyrrhonota
    # Count: 12
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  19. House Finch Haemorhous mexicanus
    # Count: 3
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  20. Bullock's Oriole Icterus bullockii
    # Count: 1
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  21. Red-winged Blackbird Agelaius phoeniceus
    # Count: 9
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  22. Common Grackle Quiscalus quiscula
    # Count: 2
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  23. Yellow Warbler Setophaga petechia
    # Count: 2
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  24. Common Nighthawk Chordeiles minor
    # Count: 1
    Date:
    Observer: Melanie Mitchell
    Location: Ridgeview Park
  25. Black-capped Chickadee Poecile atricapillus
    # Count: 2
    Date:
    Observer: Evan Wilder
    Location: Centennial Park (Arapahoe Co)
  26. Tree Swallow Tachycineta bicolor
    # Count: 4
    Date:
    Observer: Evan Wilder
    Location: Centennial Park (Arapahoe Co)
  27. Violet-green Swallow Tachycineta thalassina
    # Count: 1
    Date:
    Observer: Evan Wilder
    Location: Centennial Park (Arapahoe Co)
  28. Cedar Waxwing Bombycilla cedrorum
    # Count: 2
    Date:
    Observer: Evan Wilder
    Location: Centennial Park (Arapahoe Co)
  29. Virginia Rail Rallus limicola
    # Count: 1
    Date:
    Observer: Doug Schoch
    Location: Red-tailed Hawk Park, Aurora US-CO (39.5835,-104.7155)
  30. Blue Jay Cyanocitta cristata
    # Count: 2
    Date:
    Observer: Ken Wat
    Location: 2705 South Danube Way, Aurora, Colorado, US (39.668, -104.765)
  31. American Crow Corvus brachyrhynchos
    # Count: 1
    Date:
    Observer: Melanie Mitchell
    Location: Littles Creek Park, Littleton US-CO 39.59360, -104.98920
  32. European Starling Sturnus vulgaris
    # Count: 4
    Date:
    Observer: Ken Wat
    Location: 2705 South Danube Way, Aurora, Colorado, US (39.668, -104.765)
  33. Chipping Sparrow Spizella passerina
    # Count: 1
    Date:
    Observer: Melanie Mitchell
    Location: Littles Creek Park, Littleton US-CO 39.59360, -104.98920
  34. Killdeer Charadrius vociferus
    # Count: 3
    Date:
    Observer: Jeff Wright
    Location: Cherry Creek SP
  35. Downy Woodpecker Dryobates pubescens
    # Count: 1
    Date:
    Observer: Jeff Wright
    Location: Cherry Creek SP
  36. Northern Flicker Colaptes auratus
    # Count: 2
    Date:
    Observer: Jeff Wright
    Location: Cherry Creek SP
  37. Western Wood-Pewee Contopus sordidulus
    # Count: 2
    Date:
    Observer: Jeff Wright
    Location: Cherry Creek SP
  38. Say's Phoebe Sayornis saya
    # Count: 2
    Date:
    Observer: Jeff Wright
    Location: Cherry Creek SP
  39. Black-billed Magpie Pica hudsonia
    # Count: 4
    Date:
    Observer: Jeff Wright
    Location: Cherry Creek SP
  40. House Wren Troglodytes aedon
    # Count: 1
    Date:
    Observer: Jeff Wright
    Location: Cherry Creek SP
  41. Western Meadowlark Sturnella neglecta
    # Count: 1
    Date:
    Observer: Jeff Wright
    Location: Cherry Creek SP
  42. Rock Pigeon Columba livia
    # Count: 3
    Date:
    Observer: Tyler Wilson
    Location: Centennial Park (Arapahoe Co)
  43. Red-tailed Hawk Buteo jamaicensis
    # Count: 1
    Date:
    Observer: Tyler Wilson
    Location: Centennial Park (Arapahoe Co)
  44. Lesser Goldfinch Spinus psaltria
    # Count: 1
    Date:
    Observer: Tyler Wilson
    Location: Centennial Park (Arapahoe Co)
  45. Hairy Woodpecker Dryobates villosus
    # Count: 1
    Date:
    Observer:
    Location: 5440 S Perry St, Littleton US-CO 39.61842, -105.04293
  46. Brown-headed Cowbird Molothrus ater
    # Count: 1
    Date:
    Observer:
    Location: 5440 S Perry St, Littleton US-CO (39.6184,-105.0429)
  47. Lazuli Bunting Passerina amoena
    # Count: 1
    Date:
    Observer: Morgan Van Peursem
    Location: Centennial Park (Arapahoe Co)
  48. Western Flycatcher Empidonax difficilis
    # Count: 1
    Date:
    Observer: Wes Donnell
    Location: High Line Canal Trail--W Mineral Ave to S Elati St
  49. Bushtit Psaltriparus minimus
    # Count: 2
    Date:
    Observer: Wes Donnell
    Location: High Line Canal Trail--W Mineral Ave to S Elati St
  50. White-breasted Nuthatch Sitta carolinensis
    # Count: 1
    Date:
    Observer: Wes Donnell
    Location: High Line Canal Trail--W Mineral Ave to S Elati St
  51. Red-breasted Nuthatch Sitta canadensis
    # Count: 1
    Date:
    Observer: Wes Donnell
    Location: High Line Canal Trail--W Mineral Ave to S Elati St
  52. Snowy Egret Egretta thula
    # Count: 1
    Date:
    Observer: Steve Rash
    Location: Centennial Park (Arapahoe Co)
  53. Gadwall Mareca strepera
    # Count: 2
    Date:
    Observer: Mark McDaniel
    Location: Ketring Park and Lake
  54. Least Bittern Ixobrychus exilis
    # Count: 1
    Date:
    Observer: Timo Mitzen
    Location: Centennial Park (Arapahoe Co)
  55. House Sparrow Passer domesticus
    # Count: 2
    Date:
    Observer: Timo Mitzen
    Location: Centennial Park (Arapahoe Co)
  56. Western Grebe Aechmophorus occidentalis
    # Count: 2
    Date:
    Observer: David Muth
    Location: Cherry Creek SP
  57. American White Pelican Pelecanus erythrorhynchos
    # Count: 2
    Date:
    Observer: David Muth
    Location: Cherry Creek SP
  58. Great Egret Ardea alba
    # Count: 1
    Date:
    Observer: David Muth
    Location: Cherry Creek SP
  59. Swainson's Hawk Buteo swainsoni
    # Count: 1
    Date:
    Observer: David Muth
    Location: Cherry Creek SP
  60. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: 1
    Date:
    Observer: David Muth
    Location: Cherry Creek SP
  61. Gray Catbird Dumetella carolinensis
    # Count: 4
    Date:
    Observer: David Muth
    Location: Cherry Creek SP
  62. American Goldfinch Spinus tristis
    # Count: 4
    Date:
    Observer: David Muth
    Location: Cherry Creek SP
  63. Lark Sparrow Chondestes grammacus
    # Count: 1
    Date:
    Observer: David Muth
    Location: Cherry Creek SP
  64. Yellow-breasted Chat Icteria virens
    # Count: 1
    Date:
    Observer: David Muth
    Location: Cherry Creek SP
  65. Common Yellowthroat Geothlypis trichas
    # Count: 4
    Date:
    Observer: David Muth
    Location: Cherry Creek SP
  66. American Redstart Setophaga ruticilla
    # Count: 1
    Date:
    Observer: David Muth
    Location: Cherry Creek SP
  67. Blue-winged Teal Spatula discors
    # Count: 1
    Date:
    Observer: Doug Schoch
    Location: Cherry Creek SP
  68. American Coot Fulica americana
    # Count: 1
    Date:
    Observer: Doug Schoch
    Location: Cherry Creek SP
  69. Great Blue Heron Ardea herodias
    # Count: 2
    Date:
    Observer: Doug Schoch
    Location: Cherry Creek SP
  70. American Kestrel Falco sparverius
    # Count: 1
    Date:
    Observer: Doug Schoch
    Location: Cherry Creek SP
  71. Song Sparrow Melospiza melodia
    # Count: 3
    Date:
    Observer: Doug Schoch
    Location: Cherry Creek SP
  72. Blue Grosbeak Passerina caerulea
    # Count: 1
    Date:
    Observer: Doug Schoch
    Location: Cherry Creek SP
  73. Turkey Vulture Cathartes aura
    # Count: 2
    Date:
    Observer: Steve Hebert
    Location: Richmil Ranch Open Space
  74. Lark Bunting Calamospiza melanocorys
    # Count: 2
    Date:
    Observer: Steve Hebert
    Location: Richmil Ranch Open Space
  75. Cinnamon Teal Spatula cyanoptera
    # Count: 3
    Date:
    Observer: David Muth
    Location: Pond at S Havana St & E Alameda Ave
  76. Eastern Kingbird Tyrannus tyrannus
    # Count: 2
    Date:
    Observer: Anonymous eBirder
    Location: Cherry Creek State Park, Aurora US-CO (39.6510,-104.8489)
  77. Woodhouse's Scrub-Jay Aphelocoma woodhouseii
    # Count: 2
    Date:
    Observer: Nicole Tow
    Location: Home
  78. White-crowned Sparrow Zonotrichia leucophrys
    # Count: 1
    Date:
    Observer: G Stacks
    Location: Centennial Park (Arapahoe Co)
  79. Cooper's Hawk Accipiter cooperii
    # Count: 1
    Date:
    Observer: Jeff Dawson
    Location: Centennial Park (Arapahoe Co)
  80. Sora Porzana carolina
    # Count: 1
    Date:
    Observer: Daniel Maynard
    Location: Cherry Creek SP--Wetlands Preserve
  81. Osprey Pandion haliaetus
    # Count: 1
    Date:
    Observer: Daniel Maynard
    Location: Cherry Creek SP--Wetlands Preserve
  82. Northern Harrier Circus hudsonius
    # Count: 1
    Date:
    Observer: Daniel Maynard
    Location: Cherry Creek SP--Wetlands Preserve
  83. Great Horned Owl Bubo virginianus
    # Count: 1
    Date:
    Observer: Daniel Maynard
    Location: Cherry Creek SP--Wetlands Preserve
  84. Red-headed Woodpecker Melanerpes erythrocephalus
    # Count: 1
    Date:
    Observer: Daniel Maynard
    Location: Cherry Creek SP--Wetlands Preserve
  85. Least Flycatcher Empidonax minimus
    # Count: 1
    Date:
    Observer: Daniel Maynard
    Location: Cherry Creek SP--Wetlands Preserve
  86. Warbling Vireo Vireo gilvus
    # Count: 1
    Date:
    Observer: Daniel Maynard
    Location: Cherry Creek SP--Wetlands Preserve
  87. Brown Thrasher Toxostoma rufum
    # Count: 1
    Date:
    Observer: Daniel Maynard
    Location: Cherry Creek SP--Wetlands Preserve
  88. Western Tanager Piranga ludoviciana
    # Count: 1
    Date:
    Observer: Daniel Maynard
    Location: Cherry Creek SP--Wetlands Preserve
  89. Black-headed Grosbeak Pheucticus melanocephalus
    # Count: 1
    Date:
    Observer: Daniel Maynard
    Location: Cherry Creek SP--Wetlands Preserve
  90. Ring-billed Gull Larus delawarensis
    # Count: X
    Date:
    Observer: Veronica Reed
    Location: Aurora, Colorado, US (39.691, -104.754)
  91. Horned Lark Eremophila alpestris
    # Count: X
    Date:
    Observer: Veronica Reed
    Location: Aurora, Colorado, US (39.691, -104.754)
  92. Cassin's Sparrow Peucaea cassinii
    # Count: 2
    Date:
    Observer: Veronica Reed
    Location: Aurora, Colorado, US (39.691, -104.754)
  93. Grasshopper Sparrow Ammodramus savannarum
    # Count: X
    Date:
    Observer: Veronica Reed
    Location: Aurora, Colorado, US (39.691, -104.754)
  94. Vesper Sparrow Pooecetes gramineus
    # Count: X
    Date:
    Observer: Veronica Reed
    Location: Aurora, Colorado, US (39.691, -104.754)
  95. Common Merganser Mergus merganser
    # Count: 2
    Date:
    Observer: Pablo Quezada
    Location: Centennial Park (Arapahoe Co)
  96. Brewer's Blackbird Euphagus cyanocephalus
    # Count: 2
    Date:
    Observer: L Mitchell
    Location: South Platte Park
  97. Ruddy Duck Oxyura jamaicensis
    # Count: 1
    Date:
    Observer: Buzz Schaumberg
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  98. Franklin's Gull Leucophaeus pipixcan
    # Count: 1
    Date:
    Observer: Buzz Schaumberg
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  99. Cassin's Kingbird Tyrannus vociferans
    # Count: 1
    Date:
    Observer: Buzz Schaumberg
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  100. Dickcissel Spiza americana
    # Count: 1
    Date:
    Observer: colin 🐦
    Location: Centennial Park (Arapahoe Co)
  101. Common Loon Gavia immer
    # Count: 1
    Date:
    Observer: Paul Malinowski
    Location: McLellen Reservoir
  102. Yellow-rumped Warbler Setophaga coronata
    # Count: X
    Date:
    Observer: J R Richardson
    Location: Cherry Creek SP--Dixon Grove area
  103. Bank Swallow Riparia riparia
    # Count: 1
    Date:
    Observer: Chipper Phillips
    Location: Centennial Park (Arapahoe Co)
  104. Hermit Thrush Catharus guttatus
    # Count: 1
    Date:
    Observer: Chipper Phillips
    Location: Centennial Park (Arapahoe Co)
  105. American Wigeon Mareca americana
    # Count: 2
    Date:
    Observer: Gregg Goodrich
    Location: Cherry Creek SP
  106. Green-winged Teal Anas crecca
    # Count: 1
    Date:
    Observer: Gregg Goodrich
    Location: Cherry Creek SP
  107. Loggerhead Shrike Lanius ludovicianus
    # Count: 1
    Date:
    Observer: Ainsley Marks
    Location: 54332–54818 E County Road 6, Strasburg US-CO 39.72407, -104.34920
  108. Dusky Flycatcher Empidonax oberholseri
    # Count: 1
    Date:
    Observer: Debbie Zelkowitz
    Location: South Platte Park--Cooley Lake (limited access)
  109. Black-chinned Hummingbird Archilochus alexandri
    # Count: 1
    Date:
    Observer: Willy Galey
    Location: 7555 S Utica Dr, Littleton US-CO 39.57925, -105.04755
  110. Yellow-headed Blackbird Xanthocephalus xanthocephalus
    # Count: X
    Date:
    Observer: Ryan Corda🦉
    Location: Cherry Creek SP
  111. Marsh Wren Cistothorus palustris
    # Count: 1
    Date:
    Observer: Kirk Diedrichs
    Location: Centennial Park (Arapahoe Co)
  112. Olive-sided Flycatcher Contopus cooperi
    # Count: 1
    Date:
    Observer: Norman Erthal
    Location: Orchard Hills Park
  113. Plumbeous Vireo Vireo plumbeus
    # Count: 1
    Date:
    Observer: Theodore Schluenderfritz
    Location: High Line Canal Trail--S Broadway to S Franklin St
  114. Northern Shoveler Spatula clypeata
    # Count: 3
    Date:
    Observer: Dawn Napolitano
    Location: Cherry Creek SP--Butterfly Hill area
  115. Great-tailed Grackle Quiscalus mexicanus
    # Count: 3
    Date:
    Observer: Dawn Napolitano
    Location: Cherry Creek SP--Butterfly Hill area
  116. Wilson's Warbler Cardellina pusilla
    # Count: 2
    Date:
    Observer: Norman Erthal
    Location: Cherry Creek Valley Ecological Park
  117. Swainson's Thrush Catharus ustulatus
    # Count: 1
    Date:
    Observer: Doug Schoch
    Location: Cherry Creek SP
  118. Wilson's Snipe Gallinago delicata
    # Count: 1
    Date:
    Observer: Ken Wat
    Location: Cherry Creek SP--Railroad Bed Trail
  119. Wilson's Phalarope Phalaropus tricolor
    # Count: 1
    Date:
    Observer: Ken Wat
    Location: Cherry Creek SP--Cottonwood Creek Wetlands
  120. Wild Turkey Meleagris gallopavo
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Bijou Basin Open Space (Restricted Access)
  121. Willow Flycatcher Empidonax traillii
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Bijou Basin Open Space (Restricted Access)
  122. Orchard Oriole Icterus spurius
    # Count: 2
    Date:
    Observer: Cole Sage
    Location: Bijou Basin Open Space (Restricted Access)
  123. Clark's Grebe Aechmophorus clarkii
    # Count: 1
    Date:
    Observer: David Suddjian
    Location: Quincy Reservoir
  124. Rock Wren Salpinctes obsoletus
    # Count: 1
    Date:
    Observer: John Arthur
    Location: Cherry Creek SP
  125. Orange-crowned Warbler Leiothlypis celata
    # Count: 2
    Date:
    Observer: John Arthur
    Location: Cherry Creek SP
  126. California Gull Larus californicus
    # Count: 1
    Date:
    Observer: Matt Clark
    Location: Centennial Park (Arapahoe Co)
  127. Common Raven Corvus corax
    # Count: 1
    Date:
    Observer: Buzz Schaumberg
    Location: South Platte Park, Littleton US-CO 39.56995, -105.04180
  128. Northern Mockingbird Mimus polyglottos
    # Count: 1
    Date:
    Observer: Steve Stachowiak
    Location: Bridge W of Deer Trail
  129. Burrowing Owl Athene cunicularia
    # Count: 2
    Date:
    Observer: Doug Schoch
    Location: 53700–55550 E County Road 30, Strasburg US-CO 39.63689, -104.35628
  130. Chimney Swift Chaetura pelagica
    # Count: 3
    Date:
    Observer: Steve Stachowiak
    Location: Byers (town)
  131. Black-throated Gray Warbler Setophaga nigrescens
    # Count: 1
    Date:
    Observer: Rajkumar Manikandan
    Location: Cherry Creek Valley Ecological Park
  132. Pied-billed Grebe Podilymbus podiceps
    # Count: 1
    Date:
    Observer: Erika Gordon
    Location: Cherry Creek SP--Cottonwood Creek Wetlands
  133. Bufflehead Bucephala albeola
    # Count: 1
    Date:
    Observer: Betty Glass
    Location: South Platte River--Reynolds Landing
  134. Golden Eagle Aquila chrysaetos
    # Count: 2
    Date:
    Observer: Sandhya Pindi
    Location: 59536–60070 CR-42, Strasburg US-CO 39.59379, -104.28742
  135. Pygmy Nuthatch Sitta pygmaea
    # Count: 3
    Date:
    Observer: Ethan Cleveland
    Location: Orchard Hills Park
  136. MacGillivray's Warbler Geothlypis tolmiei
    # Count: 1
    Date:
    Observer: Ethan Cleveland
    Location: Orchard Hills Park
  137. Brewer's Sparrow Spizella breweri
    # Count: 2
    Date:
    Observer: Linda Ek
    Location: Cherry Creek SP--Butterfly Hill area
  138. American Avocet Recurvirostra americana
    # Count: 2
    Date:
    Observer: Art Hudak
    Location: Centennial Park (Arapahoe Co)
  139. Chestnut-sided Warbler Setophaga pensylvanica
    # Count: 1
    Date:
    Observer: Ethan Cleveland
    Location: Cherry Creek SP
  140. Clay-colored Sparrow Spizella pallida
    # Count: 1
    Date:
    Observer: Meg Reck
    Location: Aurora Sports Park
  141. Western Bluebird Sialia mexicana
    # Count: 1
    Date:
    Observer: Bradley Richardson
    Location: Knudtson Rd
  142. Pine Siskin Spinus pinus
    # Count: 2
    Date:
    Observer: Ethan Cleveland
    Location: Cherry Creek SP
  143. White-faced Ibis Plegadis chihi
    # Count: 19
    Date:
    Observer: Bodhi Barnett
    Location: Cherry Creek SP
  144. Lesser Scaup Aythya affinis
    # Count: 4
    Date:
    Observer: Karen Cleaver
    Location: South Platte Park, Littleton US-CO 39.56857, -105.04503
  145. Hooded Merganser Lophodytes cucullatus
    # Count: 1
    Date:
    Observer: Jaxon Speer
    Location: South Platte Park, Littleton US-CO 39.57553, -105.03763
  146. Redhead Aythya americana
    # Count: 3
    Date:
    Observer: Mary Keithler
    Location: Cherry Creek State Park, Greenwood Village US-CO 39.62420, -104.86860
  147. Lincoln's Sparrow Melospiza lincolnii
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Aurora Sports Park
  148. Forster's Tern Sterna forsteri
    # Count: 3
    Date:
    Observer: Cynthia Madsen
    Location: Cherry Creek State Park
  149. Rose-breasted Grosbeak Pheucticus ludovicianus
    # Count: 1
    Date:
    Observer: Paula Mitchell
    Location: 1324 E Green Meadow Ln, Greenwood Village US-CO 39.61212, -104.97230
  150. Willet Tringa semipalmata
    # Count: 1
    Date:
    Observer: Luke Karl
    Location: Cherry Creek SP--Prairie Loop
  151. Eared Grebe Podiceps nigricollis
    # Count: 1
    Date:
    Observer: Robin Trevillian
    Location: Quincy Reservoir
  152. American Pipit Anthus rubescens
    # Count: 1
    Date:
    Observer: Jonathan Bowser
    Location: Cherry Creek State Park, Englewood US-CO 39.61397, -104.84330
  153. Short-eared Owl Asio flammeus
    # Count: 2
    Date:
    Observer: matt newport
    Location: 3277–3903 S County Road 193, Byers US-CO 39.65580, -104.15381
  154. Solitary Sandpiper Tringa solitaria
    # Count: 1
    Date:
    Observer: Russell Clayshulte
    Location: Quincy Reservoir
  155. Green-tailed Towhee Pipilo chlorurus
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Quincy Reservoir
  156. Whimbrel Numenius phaeopus
    # Count: 1
    Date:
    Observer: George Roatan - Sea Kayak Eco Tours
    Location: South Platte Park--Cooley Lake (limited access)
  157. Northern Pintail Anas acuta
    # Count: 5
    Date:
    Observer: Christine Tompkins
    Location: Cherry Creek SP--Pelican Point area
  158. Barn Owl Tyto alba
    # Count: 1
    Date:
    Observer: Paula Kaskie
    Location: 17687 East Loyola Drive, Aurora, Colorado, US (39.646, -104.783)Toll Gate Trail round trip
  159. Hammond's Flycatcher Empidonax hammondii
    # Count: 1
    Date:
    Observer: G Stacks
    Location: Cherry Creek SP
  160. Virginia's Warbler Leiothlypis virginiae
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Aurora Sports Park
  161. Long-billed Dowitcher Limnodromus scolopaceus
    # Count: 3
    Date:
    Observer: Abed Nashef
    Location: Cherry Creek SP
  162. Ferruginous Hawk Buteo regalis
    # Count: 1
    Date:
    Observer: Abed Nashef
    Location: Cherry Creek SP
  163. Ring-necked Duck Aythya collaris
    # Count: 1
    Date:
    Observer: Mark McDaniel
    Location: Ketring Park and Lake
  164. Red Crossbill Loxia curvirostra
    # Count: 1
    Date:
    Observer: Cynthia Cestkowski
    Location: Ponderosa Preserve (restricted access)
  165. Horned Grebe Podiceps auritus
    # Count: 6
    Date:
    Observer: Candice Johnson
    Location: Cherry Creek SP
  166. Bonaparte's Gull Chroicocephalus philadelphia
    # Count: 22
    Date:
    Observer: Candice Johnson
    Location: Cherry Creek SP
  167. Dark-eyed Junco Junco hyemalis
    # Count: 1
    Date:
    Observer: Rosanne Juergens
    Location: Roo's Roost
  168. Broad-winged Hawk Buteo platypterus
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: South Platte Park--C470 area
  169. Savannah Sparrow Passerculus sandwichensis
    # Count: 1
    Date:
    Observer: Meg Reck
    Location: Cherry Creek SP--Railroad Bed Trail
  170. Mountain Chickadee Poecile gambeli
    # Count: 1
    Date:
    Observer: Mary Kay Waddington
    Location: 1809 E Tufts Ave
  171. Greater Yellowlegs Tringa melanoleuca
    # Count: 1
    Date:
    Observer: Jonathan Bowser
    Location: Cherry Creek SP--Cottonwood Creek Wetlands
  172. Blackpoll Warbler Setophaga striata
    # Count: 1
    Date:
    Observer: Ken Wat
    Location: Cherry Creek SP
  173. Lesser Yellowlegs Tringa flavipes
    # Count: 1
    Date:
    Observer: Buzz Schaumberg
    Location: Cherry Creek State park -Cottonwood Creek Wetlands NorthCO (39.6257,-104.8463)
  174. Red-necked Phalarope Phalaropus lobatus
    # Count: 37
    Date:
    Observer: Kathryn Kay
    Location: Cherry Creek SP--Swim Beach & Smoky Hill Shelter area
  175. Pinyon Jay Gymnorhinus cyanocephalus
    # Count: 4
    Date:
    Observer: Ken Wat
    Location: Ponderosa Preserve (restricted access)
  176. Gray-cheeked Thrush Catharus minimus
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: Aurora Sports Park
  177. Gray Flycatcher Empidonax wrightii
    # Count: 1
    Date:
    Observer: Audrey Hicks
    Location: Lee Gulch Overlook Park
  178. Semipalmated Plover Charadrius semipalmatus
    # Count: 1
    Date:
    Observer: Doug Schoch
    Location: Cherry Creek SP
  179. Western Sandpiper Calidris mauri
    # Count: 1
    Date:
    Observer: Doug Schoch
    Location: Cherry Creek SP
  180. Philadelphia Vireo Vireo philadelphicus
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Marjorie Perry Nature Preserve
  181. Northern Waterthrush Parkesia noveboracensis
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Marjorie Perry Nature Preserve
  182. Ruby-crowned Kinglet Corthylio calendula
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Quincy Reservoir
  183. Caspian Tern Hydroprogne caspia
    # Count: 1
    Date:
    Observer: Robert Tonge
    Location: Cherry Creek SP--Dixon Grove area
  184. Baird's Sandpiper Calidris bairdii
    # Count: 1
    Date:
    Observer: Mary Keithler
    Location: Cherry Creek SP--Cottonwood Creek Wetlands
  185. Semipalmated Sandpiper Calidris pusilla
    # Count: 1
    Date:
    Observer: matt newport
    Location: Cherry Creek SP
  186. Eastern Phoebe Sayornis phoebe
    # Count: 1
    Date:
    Observer: G Stacks
    Location: High Line Canal Trail--S University Blvd to E Orchard Rd
  187. Cassin's Vireo Vireo cassinii
    # Count: 1
    Date:
    Observer: Ethan Cleveland
    Location: Orchard Hills Park
  188. Peregrine Falcon Falco peregrinus
    # Count: 1
    Date:
    Observer: DAVID HILL
    Location: Cherry Creek SP--South End
  189. Sharp-shinned Hawk Accipiter striatus
    # Count: 1
    Date:
    Observer: Cynthia Madsen
    Location: Cherry Creek SP
  190. Black Tern Chlidonias niger
    # Count: 1
    Date:
    Observer: Loch Kilpatrick
    Location: Aurora, Smoky Hill Trail
  191. Townsend's Solitaire Myadestes townsendi
    # Count: 1
    Date:
    Observer: Paula Kaskie
    Location: 17687 East Loyola Drive, Aurora, Colorado, US (39.646, -104.783)Toll Gate Trail round trip
  192. Common Goldeneye Bucephala clangula
    # Count: 2
    Date:
    Observer: Ethan Cleveland
    Location: Cherry Creek SP
  193. Common Poorwill Phalaenoptilus nuttallii
    # Count: 1
    Date:
    Observer: Ethan Cleveland
    Location: Cherry Creek SP
  194. Merlin Falco columbarius
    # Count: 1
    Date:
    Observer: Mark McDaniel
    Location: Ketring Park, Littleton US-CO 39.60726, -104.99789
  195. White-throated Sparrow Zonotrichia albicollis
    # Count: 1
    Date:
    Observer: D Reznicek
    Location: High Line Canal Trail--S Broadway to S Franklin St
  196. Eastern Screech-Owl Megascops asio
    # Count: 1
    Date:
    Observer: Mary Kay Waddington
    Location: 1809 E Tufts Ave
  197. Marbled Godwit Limosa fedoa
    # Count: 5
    Date:
    Observer: Jill Boice
    Location: Cherry Creek SP
  198. Summer Tanager Piranga rubra
    # Count: 1
    Date:
    Observer: Jud Winfield
    Location: my house
  199. Lesser Black-backed Gull Larus fuscus
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Denver Arapahoe Disposal Site
  200. Ash-throated Flycatcher Myiarchus cinerascens
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Aurora Sports Park
  201. Green Heron Butorides virescens
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Highland Park - Controlled Access Area
  202. Cackling Goose Branta hutchinsii
    # Count: 3
    Date:
    Observer: Jordan Gerue
    Location: Centennial Park (Arapahoe Co)
  203. Greater White-fronted Goose Anser albifrons
    # Count: 1
    Date:
    Observer: Peter DellaVecchia
    Location: Centennial Park (Arapahoe Co)
  204. Sage Thrasher Oreoscoptes montanus
    # Count: 1
    Date:
    Observer: matt newport
    Location: Cherry Creek SP
  205. Prairie Falcon Falco mexicanus
    # Count: 1
    Date:
    Observer: Carly Philpott
    Location: Cherry Creek HS campus
  206. Western Cattle Egret Bubulcus ibis
    # Count: 1
    Date:
    Observer: hank perry
    Location: Cherry Creek State Park, Greenwood Village US-CO (39.6272,-104.8505)
  207. Red-breasted Merganser Mergus serrator
    # Count: 1
    Date:
    Observer: Ethan Cleveland
    Location: Cherry Creek SP
  208. Snow Goose Anser caerulescens
    # Count: 1
    Date:
    Observer: Ethan Cleveland
    Location: Cherry Creek SP
  209. Glossy Ibis Plegadis falcinellus
    # Count: 1
    Date:
    Observer: G Stacks
    Location: Cherry Creek SP
  210. Golden-crowned Kinglet Regulus satrapa
    # Count: 1
    Date:
    Observer: Kevin Williams
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  211. Red-naped Sapsucker Sphyrapicus nuchalis
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Aurora Sports Park
  212. Mountain Bluebird Sialia currucoides
    # Count: 2
    Date:
    Observer: Ken Wat
    Location: Sampson Creek Trail
  213. Purple Martin Progne subis
    # Count: 1
    Date:
    Observer: Jonathan Bowser
    Location: Cherry Creek State Park, Greenwood Village US-CO 39.63542, -104.86822
  214. Herring Gull Larus argentatus
    # Count: 2
    Date:
    Observer: matt newport
    Location: Cherry Creek SP
  215. Black-necked Stilt Himantopus mexicanus
    # Count: 1
    Date:
    Observer: Ken Wat
    Location: Cherry Creek SP--Cottonwood Creek Wetlands
  216. Indigo Bunting Passerina cyanea
    # Count: 1
    Date:
    Observer: Jonathan Bowser
    Location: Emporia Circle
  217. Yellow-bellied Sapsucker Sphyrapicus varius
    # Count: 1
    Date:
    Observer: Meg Reck
    Location: My backyard in Aurora
  218. Canvasback Aythya valisineria
    # Count: 1
    Date:
    Observer: Meg Reck
    Location: Quincy Reservoir
  219. Greater Scaup Aythya marila
    # Count: 2
    Date:
    Observer: Ethan Cleveland
    Location: Cherry Creek SP
  220. American Tree Sparrow Spizelloides arborea
    # Count: 1
    Date:
    Observer: nancy schacht
    Location: Windmill Creek Trail Pond, Englewood, Colorado, US (39.611, -104.839)
  221. Brown Creeper Certhia americana
    # Count: 1
    Date:
    Observer: Doug Schoch
    Location: Sampson Creek Trail
  222. Northern Shrike Lanius borealis
    # Count: 1
    Date:
    Observer: Dailee Fagnant
    Location: Coal Creek Arena, Aurora
  223. Sandhill Crane Antigone canadensis
    # Count: 5
    Date:
    Observer: Q P
    Location: The Jez (39.6, -104.796)
  224. Pine Warbler Setophaga pinus
    # Count: 1
    Date:
    Observer: Meg Reck
    Location: My backyard in Aurora
  225. Swamp Sparrow Melospiza georgiana
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Cherry Creek SP
  226. Rough-legged Hawk Buteo lagopus
    # Count: 1
    Date:
    Observer: Brian Johnson
    Location: South Platte River--Northern Wildlife Area to West Bowles Ave
  227. Eastern Bluebird Sialia sialis
    # Count: 2
    Date:
    Observer: Dustin Kohler
    Location: South Platte River--Reynolds Landing
  228. Iceland Gull Larus glaucoides
    # Count: 3
    Date:
    Observer: Russell Clayshulte
    Location: Aurora Reservoir--West Side
  229. Golden-crowned Sparrow Zonotrichia atricapilla
    # Count: 1
    Date:
    Observer: colin 🐦
    Location: Cherry Creek SP--Railroad Bed Trail
  230. American Dipper Cinclus mexicanus
    # Count: 1
    Date:
    Observer: LeAnn Joswick
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  231. Ross's Goose Anser rossii
    # Count: 1
    Date:
    Observer: Matt DeVries
    Location: 6678 South Quantock Way, Aurora, Colorado, US (39.595, -104.677)
  232. Barrow's Goldeneye Bucephala islandica
    # Count: 1
    Date:
    Observer: Brandon Day
    Location: South Platte Park--E and Mary Carter Greenway Trails, north part (overhead power lines to W Mineral Ave)
  233. Northern Cardinal Cardinalis cardinalis
    # Count: 1
    Date:
    Observer: Aspen Buehl
    Location: 13188 E Linvale Pl, Aurora US-CO 39.66688, -104.83739
  234. American Goshawk Accipiter atricapillus
    # Count: 1
    Date:
    Observer: Ken Stuckey
    Location: Ketring Park and Lake
  235. Rusty Blackbird Euphagus carolinus
    # Count: 1
    Date:
    Observer: Chris Petrizzo
    Location: South Platte River--Northern Wildlife Area to West Bowles Ave
  236. Glaucous Gull Larus hyperboreus
    # Count: 1
    Date:
    Observer: matt newport
    Location: Aurora Reservoir--West Side
  237. Short-billed Gull Larus brachyrhynchus
    # Count: 1
    Date:
    Observer: Luke Pheneger
    Location: Aurora Reservoir
  238. Lapland Longspur Calcarius lapponicus
    # Count: 2
    Date:
    Observer: Doug Schoch
    Location: 8082–8298 S Oak Leaf St, Bennett US-CO 39.56499, -104.51541
  239. Long-tailed Duck Clangula hyemalis
    # Count: 1
    Date:
    Observer: matt newport
    Location: Cherry Creek SP
  240. Pacific Loon Gavia pacifica
    # Count: 1
    Date:
    Observer: Buzz Schaumberg
    Location: North East wetlands of prairie loop
  241. Harris's Sparrow Zonotrichia querula
    # Count: 1
    Date:
    Observer: Diane Highbaugh
    Location: Centennial Park (Arapahoe Co)
  242. Brant Branta bernicla
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Aurora Reservoir
  243. Black-legged Kittiwake Rissa tridactyla
    # Count: 1
    Date:
    Observer: Brian Genge
    Location: Cherry Creek SP
  244. Common Redpoll Acanthis flammea
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Bijou Basin Open Space (Restricted Access)
  245. Red-necked Grebe Podiceps grisegena
    # Count: 1
    Date:
    Observer: Felice Lyons
    Location: Cherry Creek SP
  246. Winter Wren Troglodytes hiemalis
    # Count: 1
    Date:
    Observer: Rosanne Juergens
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  247. Sanderling Calidris alba
    # Count: 1
    Date:
    Observer: Rosanne Juergens
    Location: Aurora Reservoir--Dam and North Side
  248. Red-throated Loon Gavia stellata
    # Count: 1
    Date:
    Observer: David Suddjian
    Location: Aurora Reservoir
  249. Sprague's Pipit Anthus spragueii
    # Count: 1
    Date:
    Observer: Greg Fleming
    Location: Byers, Colorado, US (39.582, -104.077)
  250. Surf Scoter Melanitta perspicillata
    # Count: 2
    Date:
    Observer: Glenn Walbek
    Location: Cherry Creek SP--Pelican Point area
  251. Neotropic Cormorant Nannopterum brasilianum
    # Count: 1
    Date:
    Observer: Steve Stachowiak
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  252. Cassin's Finch Haemorhous cassinii
    # Count: 3
    Date:
    Observer: Kevin Williams
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  253. Sabine's Gull Xema sabini
    # Count: 1
    Date:
    Observer: colin 🐦
    Location: Cherry Creek SP--Prairie Loop
  254. Chestnut-collared Longspur Calcarius ornatus
    # Count: 4
    Date:
    Observer: Norman Erthal
    Location: East Co Road 42, Deer Trail, Colorado, US (39.595, -104.03)
  255. Thick-billed Longspur Rhynchophanes mccownii
    # Count: 1
    Date:
    Observer: Norman Erthal
    Location: CR 42, Colorado, US (39.594, -104.229)
  256. Field Sparrow Spizella pusilla
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Bijou Basin Open Space (Restricted Access)
  257. Calliope Hummingbird Selasphorus calliope
    # Count: 1
    Date:
    Observer: Jared Del Rosso
    Location: E Weaver Ave
  258. Rufous Hummingbird Selasphorus rufus
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Orchard Hills Park
  259. Common Tern Sterna hirundo
    # Count: 1
    Date:
    Observer: matt newport
    Location: Cherry Creek SP
  260. Lewis's Woodpecker Melanerpes lewis
    # Count: 2
    Date:
    Observer: Kevin Williams
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  261. Townsend's Warbler Setophaga townsendi
    # Count: 1
    Date:
    Observer: Julia Johnson
    Location: Blackrock Lake
  262. Red-eyed Vireo Vireo olivaceus
    # Count: 1
    Date:
    Observer: Kevin Williams
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  263. Pectoral Sandpiper Calidris melanotos
    # Count: 1
    Date:
    Observer: Jonathan Bowser
    Location: Playa at Arapahoe CR 161 & E Quincy Rd
  264. White-winged Dove Zenaida asiatica
    # Count: 1
    Date:
    Observer: Cynthia Cestkowski
    Location: Aurora Reservoir
  265. Mountain Plover Anarhynchus montanus
    # Count: 1
    Date:
    Observer: Norman Erthal
    Location: East Co Road 34, Deer Trail, Colorado, US (39.624, -104.011)
  266. Long-billed Curlew Numenius americanus
    # Count: 1
    Date:
    Observer: Candice Johnson
    Location: Cherry Creek SP
  267. Yellow-billed Cuckoo Coccyzus americanus
    # Count: 1
    Date:
    Observer: Norman Erthal
    Location: Bridge at Woodis Road, Deer Trail, Colorado, US (39.609, -104.052)
  268. Golden-winged Warbler Vermivora chrysoptera
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Quincy Reservoir
  269. Nashville Warbler Leiothlypis ruficapilla
    # Count: 1
    Date:
    Observer: Crystal Wilson
    Location: My house 3066 S. Elati St
  270. Ovenbird Seiurus aurocapilla
    # Count: 1
    Date:
    Observer: Doug Schoch
    Location: 19846 E Garden Dr, Centennial US-CO 39.61633, -104.75697
  271. American Bittern Botaurus lentiginosus
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Aurora Sports Park
  272. Piping Plover Charadrius melodus
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Cherry Creek SP
  273. Hudsonian Godwit Limosa haemastica
    # Count: 2
    Date:
    Observer: Cole Sage
    Location: Cherry Creek SP
  274. Black-throated Sparrow Amphispiza bilineata
    # Count: 1
    Date:
    Observer: Diane Roberts
    Location: Cherry Creek SP
  275. Magnolia Warbler Setophaga magnolia
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Bijou Basin Open Space (Restricted Access)
  276. Tennessee Warbler Leiothlypis peregrina
    # Count: 1
    Date:
    Observer: Q P
    Location: Cherry Creek SP
  277. Northern Parula Setophaga americana
    # Count: 1
    Date:
    Observer: Norman Erthal
    Location: Pipeline Trail, Aurora, Colorado, US (39.631, -104.836)
  278. Baltimore Oriole Icterus galbula
    # Count: 1
    Date:
    Observer: Mary & Dave Driscoll
    Location: My Yard, US-CO-Denver
  279. Yellow-throated Warbler Setophaga dominica
    # Count: 1
    Date:
    Observer: Sperry Megerian
    Location: Cherry Creek Valley Ecological Park
  280. Snowy Plover Anarhynchus nivosus
    # Count: 1
    Date:
    Observer: Michael Lester
    Location: Cherry Creek SP--Pelican Point area
  281. Laughing Gull Leucophaeus atricilla
    # Count: 1
    Date:
    Observer: Michael Lester
    Location: Cherry Creek SP--Prairie Loop
  282. Black-and-white Warbler Mniotilta varia
    # Count: 1
    Date:
    Observer: Lisa Villiere
    Location: Hudson Gardens
  283. Lucy's Warbler Leiothlypis luciae
    # Count: 1
    Date:
    Observer: Reed Gorner
    Location: Marjorie Perry Nature Preserve
  284. Bohemian Waxwing Bombycilla garrulus
    # Count: 57
    Date:
    Observer: G P
    Location: Colorado Backyard
  285. Evening Grosbeak Coccothraustes vespertinus
    # Count: 1
    Date:
    Observer: Kaylene Wright
    Location: High Line Canal Trail--W Mineral Ave to S Elati St
  286. Snow Bunting Plectrophenax nivalis
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: County Road 173 N of Bijou Open Space Entrence
  287. Tundra Swan Cygnus columbianus
    # Count: 1
    Date:
    Observer: Isaac Ho
    Location: Redtail Lake
  288. Trumpeter Swan Cygnus buccinator
    # Count: 1
    Date:
    Observer: Betty Glass
    Location: South Platte Park--South Platte Reservoir (Arapahoe Co)
  289. Black Scoter Melanitta americana
    # Count: 1
    Date:
    Observer: Joey Kellner
    Location: South Platte Park--South Platte Reservoir (Arapahoe Co)
  290. Dunlin Calidris alpina
    # Count: 1
    Date:
    Observer: Buzz Schaumberg
    Location: Cherry Creek SP--Pelican Point area
  291. Great Black-backed Gull Larus marinus
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Aurora Reservoir
  292. Western Screech-Owl Megascops kennicottii
    # Count: 1
    Date:
    Observer: Doug Schoch
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  293. Yellow-billed Loon Gavia adamsii
    # Count: 1
    Date:
    Observer: Russell Clayshulte
    Location: Cherry Creek SP--Pelican Point area
  294. White-winged Scoter Melanitta deglandi
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Aurora Reservoir--West Side
  295. Little Gull Hydrocoloeus minutus
    # Count: 1
    Date:
    Observer: Norman Erthal
    Location: Cherry Creek SP--Pelican Point area
  296. Sedge Wren Cistothorus stellaris
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Cherry Creek SP
  297. Black-bellied Plover Pluvialis squatarola
    # Count: 1
    Date:
    Observer: Brian Genge
    Location: Cherry Creek SP
  298. Stilt Sandpiper Calidris himantopus
    # Count: 1
    Date:
    Observer: Candice Johnson
    Location: Cherry Creek SP
  299. Steller's Jay Cyanocitta stelleri
    # Count: 1
    Date:
    Observer: Joey Negreann
    Location: Cherry Creek SP--12 Mile Trail
  300. Great Crested Flycatcher Myiarchus crinitus
    # Count: 1
    Date:
    Observer: Jared Del Rosso
    Location: High Line Canal Trail--S University Blvd to E Orchard Rd
  301. Upland Sandpiper Bartramia longicauda
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Bijou Basin Open Space (Restricted Access)
  302. Curve-billed Thrasher Toxostoma curvirostre
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Lori’s house (Private property)
  303. White Ibis Eudocimus albus
    # Count: 1
    Date:
    Observer: Buzz Schaumberg
    Location: Cherry Creek SP--Prairie Loop
  304. Hooded Warbler Setophaga citrina
    # Count: 1
    Date:
    Observer: Jeff Dawson
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  305. Least Tern Sternula antillarum
    # Count: 1
    Date:
    Observer: Ric Olson
    Location: Cherry Creek SP--Pelican Point area
  306. White-rumped Sandpiper Calidris fuscicollis
    # Count: 4
    Date:
    Observer: Beth Sage
    Location: Cherry Creek SP
  307. Mississippi Kite Ictinia mississippiensis
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: South Platte Park--Northern Wildlife Area
  308. White-throated Swift Aeronautes saxatalis
    # Count: 1
    Date:
    Observer: Santi Tabares
    Location: Chatfield State Park, Littleton US-CO (39.5675,-105.0491)
  309. Band-tailed Pigeon Patagioenas fasciata
    # Count: 1
    Date:
    Observer: Mitchell Bailey
    Location: Bijou Basin Open Space (Restricted Access)
  310. Kentucky Warbler Geothlypis formosa
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Cherry Creek SP--Prairie Loop
  311. Palm Warbler Setophaga palmarum
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Quincy Reservoir
  312. Brown Pelican Pelecanus occidentalis
    # Count: 1
    Date:
    Observer: John Drummond
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  313. Wood Thrush Hylocichla mustelina
    # Count: 1
    Date:
    Observer: Cynthia Madsen
    Location: 7459 S. Tamarac Ct., Centennial Co 80112
  314. Varied Thrush Ixoreus naevius
    # Count: 1
    Date:
    Observer: David Suddjian
    Location: Littleton Cemetery
  315. Red-bellied Woodpecker Melanerpes carolinus
    # Count: 1
    Date:
    Observer: Doug Schoch
    Location: Richmil Ranch Open Space
  316. Black-throated Blue Warbler Setophaga caerulescens
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Aurora Reservoir
  317. Bobolink Dolichonyx oryzivorus
    # Count: 1
    Date:
    Observer: Burke Angstman
    Location: Cherry Creek SP
  318. Tricolored Heron Egretta tricolor
    # Count: 1
    Date:
    Observer: Kyle Robinson
    Location: Cherry Creek SP--Pelican Point area
  319. Mexican Duck Anas diazi
    # Count: 1
    Date:
    Observer: Mary Keithler
    Location: Arapahoe Lake Reservoir
  320. Sagebrush Sparrow Artemisiospiza nevadensis
    # Count: 1
    Date:
    Observer: Frank Fabbro
    Location: South Platte Park--C470 area
  321. Fox Sparrow Passerella iliaca
    # Count: 1
    Date:
    Observer: Mitchell Bailey
    Location: Schacht Home
  322. Glaucous-winged Gull Larus glaucescens
    # Count: 1
    Date:
    Observer: Ric Olson
    Location: Cherry Creek SP
  323. Black-throated Green Warbler Setophaga virens
    # Count: 1
    Date:
    Observer: Tyler Wilson
    Location: 9241–9261 E Cherry Creek South Dr, Denver US-CO (39.6647,-104.8802)
  324. Purple Finch Haemorhous purpureus
    # Count: 1
    Date:
    Observer: Dale Pate
    Location: Hudson Gardens
  325. Magnificent Frigatebird Fregata magnificens
    # Count: 1
    Date:
    Observer: Kathy Gonder
    Location: Cherry Creek SP--Prairie Loop
  326. Nelson's Sparrow Ammospiza nelsoni
    # Count: 1
    Date:
    Observer: DAVID HILL
    Location: Cherry Creek SP--Pelican Point area
  327. Parasitic Jaeger Stercorarius parasiticus
    # Count: 1
    Date:
    Observer: Christian Nunes
    Location: Cherry Creek SP--Pelican Point area
  328. Scarlet Tanager Piranga olivacea
    # Count: 1
    Date:
    Observer: Diane Roberts
    Location: Cherry Creek SP
  329. Rufous-crowned Sparrow Aimophila ruficeps
    # Count: 1
    Date:
    Observer: Patrick O'Driscoll
    Location: Richmil Ranch Open Space
  330. Scissor-tailed Flycatcher Tyrannus forficatus
    # Count: 1
    Date:
    Observer: Cynthia Madsen
    Location: Cherry Creek SP--Railroad Bed Trail
  331. Veery Catharus fuscescens
    # Count: 1
    Date:
    Observer: Joey Negreann
    Location: Cherry Creek SP
  332. Blue-winged Warbler Vermivora cyanoptera
    # Count: 1
    Date:
    Observer: DAVID HILL
    Location: Cherry Creek Valley Ecological Park, Aurora US-CO 39.57880, -104.79725
  333. Yellow-crowned Night Heron Nyctanassa violacea
    # Count: 1
    Date:
    Observer: Bill Schreitz
    Location: Cherry Creek Valley Ecological Park, Centennial US-CO 39.58066, -104.80427
  334. Carolina Wren Thryothorus ludovicianus
    # Count: 1
    Date:
    Observer: Burke Angstman
    Location: Carolina Wren Stakeout
  335. Canyon Towhee Melozone fusca
    # Count: 1
    Date:
    Observer: - Audubon Society of Greater Den
    Location: Horan home - private
  336. Gray-crowned Rosy-Finch Leucosticte tephrocotis
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Cherry Creek SP--Lake Loop
  337. Yellow-throated Vireo Vireo flavifrons
    # Count: 1
    Date:
    Observer: Timo Mitzen
    Location: South Platte Park
  338. American Golden-Plover Pluvialis dominica
    # Count: 1
    Date:
    Observer: Loch Kilpatrick
    Location: Cherry Creek SP--Pelican Point area
  339. Black Phoebe Sayornis nigricans
    # Count: 1
    Date:
    Observer: Karen Strong
    Location: South Platte Park--Northern Wildlife Area
  340. Vermilion Flycatcher Pyrocephalus rubinus
    # Count: 1
    Date:
    Observer: Michael Lester
    Location: Cherry Creek SP-- VEFL Stakeout (2018)
  341. Barnacle Goose Branta leucopsis
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Aurora Reservoir
  342. Pomarine Jaeger Stercorarius pomarinus
    # Count: 1
    Date:
    Observer: DAVID HILL
    Location: Cherry Creek SP--Swim Beach & Smoky Hill Shelter area
  343. White-eyed Vireo Vireo griseus
    # Count: 1
    Date:
    Observer: Chris Rurik
    Location: South Platte Park
  344. Buff-breasted Sandpiper Calidris subruficollis
    # Count: 1
    Date:
    Observer: Mark Minner-Lee 🦉
    Location: US-CO-Byers-65502-65814 County Road 30 - 39.6370x-104.2149
  345. Alder Flycatcher Empidonax alnorum
    # Count: 1
    Date:
    Observer: Alec Hopping
    Location: Cherry Creek SP--Lake Loop
  346. Canyon Wren Catherpes mexicanus
    # Count: 1
    Date:
    Observer: Gene Rutherford
    Location: Peoria
  347. Red Phalarope Phalaropus fulicarius
    # Count: 1
    Date:
    Observer: Glenn Walbek
    Location: Cherry Creek SP
  348. Prairie Warbler Setophaga discolor
    # Count: 1
    Date:
    Observer: Steve Stachowiak
    Location: Cherry Creek SP--South End
  349. Worm-eating Warbler Helmitheros vermivorum
    # Count: 1
    Date:
    Observer: Mark Chavez
    Location: Cherry Creek SP
  350. Slaty-backed Gull Larus schistisagus
    # Count: 1
    Date:
    Observer: Shawn Billerman
    Location: Aurora Reservoir
  351. Prothonotary Warbler Protonotaria citrea
    # Count: 1
    Date:
    Observer: Mary & Dave Driscoll
    Location: Centennial Park (Arapahoe Co)
  352. Arctic Tern Sterna paradisaea
    # Count: 1
    Date:
    Observer: David Dowell
    Location: Cherry Creek SP
  353. Little Blue Heron Egretta caerulea
    # Count: 1
    Date:
    Observer: Kay Rasmussen
    Location: Cherry Creek SP
  354. Snowy Owl Bubo scandiacus
    # Count: 1
    Date:
    Observer: Glenn Walbek
    Location: Aurora Reservoir
  355. Long-tailed Jaeger Stercorarius longicaudus
    # Count: 1
    Date:
    Observer: John Drummond
    Location: Cherry Creek SP ,SE corner
  356. Short-billed Dowitcher Limnodromus griseus
    # Count: 2
    Date:
    Observer: Cheryl Teuton
    Location: Cherry State Park Cottonwood Observation Prarie Loop
  357. Ross's Gull Rhodostethia rosea
    # Count: 1
    Date:
    Observer: Guillaume Péron
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  358. White-winged Crossbill Loxia leucoptera
    # Count: 1
    Date:
    Observer: Chris Wood
    Location: South Platte Park--C470 area
  359. Blue-headed Vireo Vireo solitarius
    # Count: 1
    Date:
    Observer: Glenn Walbek
    Location: Cherry Creek SP
  360. Blackburnian Warbler Setophaga fusca
    # Count: 1
    Date:
    Observer: Glenn Walbek
    Location: Cherry Creek SP
  361. Anna's Hummingbird Calypte anna
    # Count: 1
    Date:
    Observer: Roger Linfield
    Location: Littleton
  362. Arctic Loon Gavia arctica
    # Count: 1
    Date:
    Observer: Winston William Brockner
    Location: Cherry Creek SP
  363. Red-shouldered Hawk Buteo lineatus
    # Count: X
    Date:
    Observer: Loch Kilpatrick
    Location: Cherry Creek State Park
  364. Ruddy Turnstone Arenaria interpres
    # Count: 1
    Date:
    Observer: Timothy Davis
    Location: Aurora Reservoir
  365. Canada Warbler Cardellina canadensis
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Cherry Creek SP
  366. Eurasian Wigeon Mareca penelope
    # Count: 1
    Date:
    Observer: Steve Stachowiak
    Location: S Platte River & Littles Crk Trail
  367. Red Knot Calidris canutus
    # Count: 1
    Date:
    Observer: Steve Stachowiak
    Location: Cherry Creek SP
  368. Black-headed Gull Chroicocephalus ridibundus
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Cherry Creek SP
  369. Black-billed Cuckoo Coccyzus erythropthalmus
    # Count: 1
    Date:
    Observer: Jack Reddall
    Location: Cherry Creek SP
  370. Eastern Towhee Pipilo erythrophthalmus
    # Count: 1
    Date:
    Observer: Van Remsen
    Location: CO: Arapahoe/Jefferson Cos.; lower S. Platte R. area
  371. LeConte's Sparrow Ammospiza leconteii
    # Count: 1
    Date:
    Observer: Hugh Kingery
    Location: Cherry Creek SP
  372. Long-eared Owl Asio otus
    # Count: 4

Exotic: Provisional (1)

  1. Ring-necked Pheasant Phasianus colchicus
    # Count: 2
    Date:
    Observer: Ken Wat
    Location: Cherry Creek SP--Railroad Bed Trail

Exotic: Escapee (11)

  1. Helmeted Guineafowl Numida meleagris
    # Count: 1
    Date:
    Observer: Andrew Child
    Location: Cherry Hills Village Elementary School
  2. Chukar Alectoris chukar
    # Count: 1
    Date:
    Observer: Sean Huntley
    Location: 5936-5096 North Co Road 129, Bennett, Colorado, US (39.614, -104.455)
  3. Northern Bobwhite Colinus virginianus
    # Count: 1
    Date:
    Observer: nancy schacht
    Location: Parker Jordan Centennial Open Space
  4. Mute Swan Cygnus olor
    # Count: 1
    Date:
    Observer: Thomas Smith
    Location: South Platte Park--Cooley Lake (limited access)
  5. Muscovy Duck Cairina moschata
    # Count: 1
    Date:
    Observer: Katherine Holland
    Location: Ketring Park and Lake
  6. African Collared-Dove Streptopelia roseogrisea
    # Count: 1
    Date:
    Observer: Brian Johnson
    Location: South Platte River--Northern Wildlife Area to West Bowles Ave
  7. Black Swan Cygnus atratus
    # Count: 1
    Date:
    Observer: Kay Rasmussen
    Location: Blackstone CC Pond
  8. Red Junglefowl Gallus gallus
    # Count: 1
    Date:
    Observer: Edward Donnan
    Location: 5201 S. Delaware / Progress Park
  9. Indian Peafowl Pavo cristatus
    # Count: 5
    Date:
    Observer: Christine Alexander
    Location: Ketring Park and Lake
  10. Mandarin Duck Aix galericulata
    # Count: 1
    Date:
    Observer: Sheri Mielke
    Location: Littleton
  11. Ruddy Shelduck Tadorna ferruginea
    # Count: 1
    Date:
    Observer: Timothy Davis
    Location: Cherry Creek SP

Hybrids (32)

  1. Black-capped x Mountain Chickadee (hybrid) Poecile atricapillus x gambeli
    # Count: 1
    Date:
    Observer: Kevin Williams
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  2. Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanoptera
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: South Platte Park--Cooley Lake (limited access)
  3. Snow/Ross's x Cackling/Canada Goose (hybrid) Anser caerulescens/rossii x Branta hutchinsii/canadensis
    # Count: 2
    Date:
    Observer: Matt DeVries
    Location: 6678 South Quantock Way, Aurora, Colorado, US (39.595, -104.677)
  4. Snow x Canada Goose (hybrid) Anser caerulescens x Branta canadensis
    # Count: 1
    Date:
    Observer: Sue Riffe
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  5. Greater White-fronted x Cackling Goose (hybrid) Anser albifrons x Branta hutchinsii
    # Count: 1
    Date:
    Observer: Ken Wat
    Location: Cherry Creek SP
  6. Bufflehead x Common Goldeneye (hybrid) Bucephala albeola x clangula
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: Aurora Reservoir
  7. Snow x Cackling Goose (hybrid) Anser caerulescens x Branta hutchinsii
    # Count: 4
    Date:
    Observer: Steven Mlodinow
    Location: Aurora Reservoir
  8. Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescens
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Aurora Reservoir
  9. Ross's x Cackling Goose (hybrid) Anser rossii x Branta hutchinsii
    # Count: 1
    Date:
    Observer: David Suddjian
    Location: Aurora Reservoir
  10. Lazuli x Indigo Bunting (hybrid) Passerina amoena x cyanea
    # Count: 1
    Date:
    Observer: Todd DeVore
    Location: Cherry Creek State Park, Greenwood Village US-CO 39.63469, -104.86050
  11. Common Goldeneye x Hooded Merganser (hybrid) Bucephala clangula x Lophodytes cucullatus
    # Count: 1
    Date:
    Observer: Jonathan Bowser
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  12. Spotted x Eastern Towhee (hybrid) Pipilo maculatus x erythrophthalmus
    # Count: 1
    Date:
    Observer: Nick Moore
    Location: Cherry Creek SP--Railroad Bed Trail
  13. Mallard x Mexican Duck (hybrid) Anas platyrhynchos x diazi
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Aurora Reservoir
  14. Gadwall x Mallard (hybrid) Mareca strepera x Anas platyrhynchos
    # Count: 1
    Date:
    Observer: Jeff Percell
    Location: Aurora Sports Park
  15. Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreus
    # Count: 1
    Date:
    Observer: Brian Genge
    Location: Aurora Reservoir
  16. Ross's x Canada Goose (hybrid) Anser rossii x Branta canadensis
    # Count: 1
    Date:
    Observer: Frank Farrell
    Location: Aurora Reservoir
  17. Common x Barrow's Goldeneye (hybrid) Bucephala clangula x islandica
    # Count: 1
    Date:
    Observer: Ryan Bushong
    Location: Aurora Reservoir
  18. goldeneye sp. x Hooded Merganser (hybrid) Bucephala clangula/islandica x Lophodytes cucullatus
    # Count: 1
    Date:
    Observer: Glenn Walbek
    Location: Eaglewatch Lake
  19. Black x Eastern Phoebe (hybrid) Sayornis nigricans x phoebe
    # Count: 1
    Date:
    Observer: Santi Tabares
    Location: South Platte Park
  20. Snow x Ross's Goose (hybrid) Anser caerulescens x rossii
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Aurora Reservoir
  21. Rose-breasted x Black-headed Grosbeak (hybrid) Pheucticus ludovicianus x melanocephalus
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: Parent's House
  22. Western x Clark's Grebe (hybrid) Aechmophorus occidentalis x clarkii
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: West Toll Gate Creek Trail Pond
  23. Mallard x Mexican/Mottled Duck (hybrid) Anas platyrhynchos x diazi/fulvigula
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  24. Mallard x Mottled Duck (hybrid) Anas platyrhynchos x fulvigula
    # Count: 1
    Date:
    Observer: Glenn Walbek
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  25. Double-crested x Neotropic Cormorant (hybrid) Nannopterum auritum x brasilianum
    # Count: 1
    Date:
    Observer: Cheri & Rich Phillips
    Location: Cherry Creek SP--Pelican Point area
  26. Glaucous x Glaucous-winged Gull (hybrid) Larus hyperboreus x glaucescens
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Aurora Reservoir
  27. American Wigeon x Mallard (hybrid) Mareca americana x Anas platyrhynchos
    # Count: 1
    Date:
    Observer: Kenyon Moon
    Location: Utah Park
  28. Bullock's x Baltimore Oriole (hybrid) Icterus bullockii x galbula
    # Count: 1
    Date:
    Observer: Alec Hopping
    Location: South Platte River--West Bowles Ave to S. Prince St
  29. Laughing x Ring-billed Gull (hybrid) Leucophaeus atricilla x Larus delawarensis
    # Count: 1
    Date:
    Observer: David Dowell
    Location: Aurora Reservoir
  30. Herring x Lesser Black-backed Gull (hybrid) Larus argentatus x fuscus
    # Count: 1
    Date:
    Observer: Nick Komar
    Location: Aurora Reservoir
  31. Greater White-fronted x Canada Goose (hybrid) Anser albifrons x Branta canadensis
    # Count: 1
    Date:
    Observer: Bill Schmoker
    Location: Aurora Reservoir
  32. Mallard x Northern Pintail (hybrid) Anas platyrhynchos x acuta
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Utah Park

Additional Taxa (138)

  1. swallow sp. Hirundinidae sp.
    # Count: 40
    Date:
    Observer: Brian Genge
    Location: Centennial Park (Arapahoe Co)
  2. duck sp. Anatidae (duck sp.)
    # Count: 3
    Date:
    Observer: Linda Ek
    Location: Centennial Park (Arapahoe Co)
  3. Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperii
    # Count: 1
    Date:
    Observer: Archer Silverman
    Location: Centennial Park (Arapahoe Co)
  4. new world sparrow sp. Passerellidae sp.
    # Count: 1
    Date:
    Observer: Mari Marquard
    Location: South Platte Park--Cooley Lake (limited access)
  5. thrush sp. Turdidae sp.
    # Count: 1
    Date:
    Observer: Dawn Napolitano
    Location: Cherry Creek SP--Butterfly Hill area
  6. hawk sp. Accipitridae sp. (hawk sp.)
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Cherry Creek SP--Wetlands Preserve
  7. Catharus sp. Catharus sp.
    # Count: 2
    Date:
    Observer: Cole Sage
    Location: Bijou Basin Open Space (Restricted Access)
  8. Black-capped/Mountain Chickadee Poecile atricapillus/gambeli
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Marjorie Perry Nature Preserve
  9. hummingbird sp. Trochilidae sp.
    # Count: 1
    Date:
    Observer: Godofredo Miranda
    Location: Eaglewatch Lake, Littleton US-CO (39.5704,-105.0433)
  10. woodpecker sp. Picidae sp.
    # Count: 1
    Date:
    Observer: Linda Ek
    Location: Cherry Creek SP--Prairie Loop
  11. new world warbler sp. Parulidae sp.
    # Count: 1
    Date:
    Observer: Ethan Cleveland
    Location: Cherry Creek SP
  12. vireo sp. Vireo sp.
    # Count: 2
    Date:
    Observer: Bill Gordon
    Location: Englewood Airbnb
  13. MacGillivray's/Mourning Warbler Geothlypis tolmiei/philadelphia
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Aurora Sports Park
  14. Tree/Violet-green Swallow Tachycineta bicolor/thalassina
    # Count: 3
    Date:
    Observer: Mike Chen
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  15. tern sp. Sterninae sp.
    # Count: 2
    Date:
    Observer: Rosanne Juergens
    Location: Cherry Creek SP--Cottonwood Creek Wetlands
  16. Empidonax sp. Empidonax sp.
    # Count: 1
    Date:
    Observer: Leona Crowl
    Location: Cherry Creek SP--Lake Loop
  17. gull sp. Larinae sp.
    # Count: 43
    Date:
    Observer: Pharaloo Bergstrom
    Location: Along the reservoir trail
  18. finch sp. Fringillidae sp.
    # Count: 1
    Date:
    Observer: Linda Ek
    Location: Willow Spring Open Space
  19. blackbird sp. Icteridae sp.
    # Count: 1
    Date:
    Observer: Linda Ek
    Location: Willow Spring Open Space
  20. nighthawk sp. Chordeiles sp.
    # Count: 2
    Date:
    Observer: Ethan Cleveland
    Location: Aurora Sports Park
  21. Larus sp. Larus sp.
    # Count: 25
    Date:
    Observer: Mike Chen
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  22. jay sp. Corvidae sp. (jay sp.)
    # Count: 4
    Date:
    Observer: Phillip Gerkin
    Location: Ponderosa Preserve (restricted access)
  23. Accipiter sp. Accipiter sp.
    # Count: 1
    Date:
    Observer: Ethan Cleveland
    Location: Cherry Creek SP
  24. Gray/Dusky Flycatcher Empidonax wrightii/oberholseri
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Orchard Hills Park
  25. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    # Count: 1
    Date:
    Observer: Ken Wat
    Location: Cherry Creek SP
  26. peep sp. Calidris sp. (peep sp.)
    # Count: 4
    Date:
    Observer: Ken Wat
    Location: Cherry Creek SP
  27. pigeon/dove sp. Columbidae sp.
    # Count: 1
    Date:
    Observer: Kenyon Moon
    Location: Cherry Creek SP--Pelican Point area
  28. new world flycatcher sp. Tyrannidae sp.
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: On The Swoosh And Pinion
  29. Common/Red-breasted Merganser Mergus merganser/serrator
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: South Platte Park
  30. Lazuli/Indigo Bunting Passerina amoena/cyanea
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Bijou Basin Open Space (Restricted Access)
  31. shorebird sp. Charadriiformes sp.
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Highland Park - Controlled Access Area
  32. white egret sp. Egretta/Bubulcus/Ardea sp.
    # Count: 1
    Date:
    Observer: Debbie Miller
    Location: Cherry Creek SP
  33. Cackling/Canada Goose Branta hutchinsii/canadensis
    # Count: 1
    Date:
    Observer: matt newport
    Location: Cherry Creek SP
  34. passerine sp. Passeriformes sp.
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: High Line Canal Trail--S University Blvd to E Orchard Rd
  35. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    # Count: 2
    Date:
    Observer: Ken Wat
    Location: Cherry Creek SP
  36. Buteo sp. Buteo sp.
    # Count: 1
    Date:
    Observer: kelly Parpovic
    Location: South Platte River--Reynolds Landing
  37. Downy/Hairy Woodpecker Dryobates pubescens/villosus
    # Count: 1
    Date:
    Observer: Christopher Fimbel
    Location: Cherry Creek SP--Pelican Point area
  38. grebe sp. Podicipedidae sp.
    # Count: 3
    Date:
    Observer: Jill Boice
    Location: Cherry Creek SP
  39. Eurasian/American Wigeon Mareca penelope/americana
    # Count: 1
    Date:
    Observer: Jannie Shapiro
    Location: Aurora Reservoir
  40. plover sp. Charadriidae sp.
    # Count: 1
    Date:
    Observer: linda p
    Location: Centennial Park (Arapahoe Co)
  41. Glossy/White-faced Ibis Plegadis falcinellus/chihi
    # Count: 9
    Date:
    Observer: Linda Ek
    Location: South Platte Park--Carson Nature Center
  42. Greater/Lesser Scaup Aythya marila/affinis
    # Count: 2
    Date:
    Observer: Mike Chen
    Location: Cherry Creek SP--Cottonwood Creek Wetlands
  43. small falcon sp. Falco sp. (small falcon sp.)
    # Count: 1
    Date:
    Observer: Harley Kovacs
    Location: Creekside Park
  44. Blue-winged/Cinnamon Teal Spatula discors/cyanoptera
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Cherry Creek SP
  45. falcon sp. Falco sp.
    # Count: 1
    Date:
    Observer: Julie Hendricksen
    Location: Cherry Creek SP--Cottonwood Creek Wetlands
  46. Mallard/Mexican Duck Anas platyrhynchos/diazi
    # Count: 1
    Date:
    Observer: Cyndy Johnson
    Location: South Platte Park--Cooley Lake (limited access)
  47. nuthatch sp. Sitta sp.
    # Count: 1
    Date:
    Observer: Penelope Smith
    Location: 5101 S Broadway, Englewood US-CO 39.62359, -home104.98826
  48. Horned/Eared Grebe Podiceps auritus/nigricollis
    # Count: 3
    Date:
    Observer: Ken Wat
    Location: Cherry Creek SP
  49. Aythya sp. Aythya sp.
    # Count: 40
    Date:
    Observer: Skye Haas
    Location: Cherry Creek SP
  50. goose sp. Anatidae (goose sp.)
    # Count: 12
    Date:
    Observer: Mary & Dave Driscoll
    Location: My Yard, US-CO-Denver
  51. diurnal raptor sp. Accipitriformes/Falconiformes sp.
    # Count: 1
    Date:
    Observer: Ryan Corda🦉
    Location: Cherry Hills Village Trail
  52. teal sp. Anatidae sp. (teal sp.)
    # Count: 1
    Date:
    Observer: Pauline Reetz
    Location: Cherry Creek SP--Wetlands Preserve
  53. wren sp. Troglodytidae sp.
    # Count: 1
    Date:
    Observer: john williams
    Location: Pronghorn Natural Area
  54. dabbling duck sp. Anatidae sp. (dabbling duck sp.)
    # Count: 1
    Date:
    Observer: Beth Campbell
    Location: South Platte Park--C470 area
  55. Domestic goose sp. (Domestic type) Anser sp. (Domestic type)
    # Count: 1
    Date:
    Observer: michelle trotter
    Location: Cherry Creek SP
  56. Spotted/Eastern Towhee (Rufous-sided Towhee) Pipilo maculatus/erythrophthalmus
    # Count: 1
    Date:
    Observer: Mary Chamberlin
    Location: Hummer
  57. Snow/Ross's Goose Anser caerulescens/rossii
    # Count: 23
    Date:
    Observer: Matt DeVries
    Location: 6678 South Quantock Way, Aurora, Colorado, US (39.595, -104.677)
  58. Common/Barrow's Goldeneye Bucephala clangula/islandica
    # Count: 4
    Date:
    Observer: Candyce Herman
    Location: South Platte Park
  59. new world goldfinch sp. Spinus sp. (goldfinch sp.)
    # Count: 1
    Date:
    Observer: Christopher Fimbel
    Location: Orchard Hills Park
  60. crow/raven sp. Corvus sp.
    # Count: 3
    Date:
    Observer: Oskar Ehrhardt
    Location: 9375 East Dry Creek Road, Centennial, Colorado, US (39.581, -104.879)
  61. Herring/Iceland Gull Larus argentatus/glaucoides
    # Count: 4
    Date:
    Observer: David Suddjian
    Location: Aurora Reservoir
  62. Spizella sp./American Tree Sparrow Spizella/Spizelloides sp.
    # Count: 1
    Date:
    Observer: South Platte Park Wildlife Observation Data
    Location: South Platte Park--Cooley Lake West(limited access)
  63. waterfowl sp. Anatidae sp.
    # Count: 500
    Date:
    Observer: Diego Casanova
    Location: Cherry Creek SP--Lake Loop
  64. swan sp. Cygnus sp.
    # Count: 1
    Date:
    Observer: Carly Crow
    Location: Aurora Reservoir--Dam and North Side
  65. loon sp. Gavia sp.
    # Count: 1
    Date:
    Observer: Timo Mitzen
    Location: Cherry Creek SP
  66. large falcon sp. Falco sp. (large falcon sp.)
    # Count: 1
    Date:
    Observer: Mary Keithler
    Location: Cherry Creek State Park, Greenwood Village US-CO 39.62420, -104.86860
  67. Loggerhead/Northern Shrike Lanius ludovicianus/borealis
    # Count: 1
    Date:
    Observer: Cole Sites
    Location: Bufflehead Lake
  68. Double-crested/Neotropic Cormorant Nannopterum auritum/brasilianum
    # Count: 1
    Date:
    Observer: John Bowler
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  69. scoter sp. Melanitta sp.
    # Count: 1
    Date:
    Observer: Diane Roberts
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  70. Trumpeter/Tundra Swan Cygnus buccinator/columbianus
    # Count: 1
    Date:
    Observer: David Suddjian
    Location: Aurora Reservoir
  71. Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalus
    # Count: 1
    Date:
    Observer: Eamon W
    Location: Cherry Creek SP
  72. Western/Eastern Meadowlark Sturnella neglecta/magna
    # Count: 5
    Date:
    Observer: Katherine Holland
    Location: Holland House (Centennial)
  73. bluebird sp. Sialia sp.
    # Count: 1
    Date:
    Observer: Ethan Cleveland
    Location: Richmil Ranch Open Space
  74. Yellow-bellied/Red-naped Sapsucker Sphyrapicus varius/nuchalis
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Bijou Basin Open Space (Restricted Access)
  75. Spizella sp. Spizella sp.
    # Count: 2
    Date:
    Observer: Art Hudak
    Location: Centennial Park (Arapahoe Co)
  76. Cassin's/Western Kingbird Tyrannus vociferans/verticalis
    # Count: 2
    Date:
    Observer: Gilbert Bouchard
    Location: Cherry Creek SP--Pelican Point area
  77. Cassin's/Blue-headed Vireo Vireo cassinii/solitarius
    # Count: 1
    Date:
    Observer: Robin Trevillian
    Location: Plains Conservation Center
  78. rail/crake sp. Rallidae sp. (rail/crake sp.)
    # Count: 1
    Date:
    Observer: Kevin Williams
    Location: Cherry Creek SP--Cottonwood Creek Wetlands
  79. Setophaga sp. Setophaga sp.
    # Count: 1
    Date:
    Observer: Art Hudak
    Location: Centennial Park (Arapahoe Co)
  80. Buteo/eagle sp. Buteo/eagle sp.
    # Count: 2
    Date:
    Observer: Lisa Villiere
    Location: Cherry Creek SP--Butterfly Hill area
  81. Western/Eastern Wood-Pewee Contopus sordidulus/virens
    # Count: 1
    Date:
    Observer: Debbie Zelkowitz
    Location: South Platte Park--Northern Wildlife Area
  82. pewee sp. (Contopus sp.) Contopus sp.
    # Count: 1
    Date:
    Observer: Diane Highbaugh
    Location: Neighborhood
  83. owl sp. Strigiformes sp.
    # Count: 1
    Date:
    Observer: Christopher Fimbel
    Location: Cherry Creek SP
  84. Rose-breasted/Black-headed Grosbeak Pheucticus ludovicianus/melanocephalus
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Aurora Sports Park
  85. Rusty/Brewer's Blackbird Euphagus carolinus/cyanocephalus
    # Count: 1
    Date:
    Observer: Evon Holladay
    Location: Platte River
  86. grackle sp. Quiscalus sp.
    # Count: 7
    Date:
    Observer: Anonymous eBirder
    Location: Cherry Creek Trail, Aurora, Colorado, US (39.625, -104.843)
  87. Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceus
    # Count: 2
    Date:
    Observer: Mary Keithler
    Location: Cherry Creek SP--Cottonwood Creek Wetlands
  88. Bullock's/Baltimore Oriole Icterus bullockii/galbula
    # Count: 1
    Date:
    Observer: David Suddjian
    Location: Richmil Ranch Open Space
  89. Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseri
    # Count: 1
    Date:
    Observer: Kevin Williams
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  90. large shorebird sp. Scolopacidae sp. (large shorebird sp.)
    # Count: 1
    Date:
    Observer: cynthia taylor
    Location: South Platte Park--Northern Wildlife Area
  91. heron sp. Ardeidae sp.
    # Count: X
    Date:
    Observer: Emma Cromartie
    Location: Cherry Creek SP--Wetlands Preserve
  92. Ruby-crowned/Golden-crowned Kinglet Corthylio calendula/Regulus satrapa
    # Count: 1
    Date:
    Observer: Mario Montealegre
    Location: 25030 E Ottawa Dr, Aurora US-CO (39.5921,-104.6964)
  93. Bohemian/Cedar Waxwing Bombycilla garrulus/cedrorum
    # Count: 30
    Date:
    Observer: Melissa McKibben
    Location: 2121 E Kettle Ave, Centennial US-CO 39.57681, -104.96413
  94. raven sp. Corvus sp. (raven sp.)
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: County Road 173 N of Bijou Open Space Entrence
  95. Long-eared/Short-eared Owl Asio otus/flammeus
    # Count: 1
    Date:
    Observer: Emily Davenport
    Location: Cherry Creek SP
  96. Laughing/Franklin's Gull Leucophaeus atricilla/pipixcan
    # Count: 1
    Date:
    Observer: Kevin Williams
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  97. pheasant sp. Phasianidae sp. (pheasant sp.)
    # Count: 1
    Date:
    Observer: Tanya Stevens
    Location: Arapahoe Crossing Shopping Center
  98. Pacific/Winter Wren Troglodytes pacificus/hiemalis
    # Count: 1
    Date:
    Observer: Cathy Sheeter
    Location: Aurora Sports Park
  99. Black-bellied Plover/golden-plover sp. Pluvialis sp.
    # Count: 2
    Date:
    Observer: Ken Wat
    Location: Cherry Creek SP--Pelican Point area
  100. Selasphorus sp. Selasphorus sp.
    # Count: 4
    Date:
    Observer: Kevin Williams
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  101. Myiarchus sp. Myiarchus sp.
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Bijou Basin Open Space (Restricted Access)
  102. Yellow-crowned/Black-crowned Night Heron Nycticorax nycticorax/Nyctanassa violacea
    # Count: 1
    Date:
    Observer: Anonymous eBirder
    Location: Hudson Gardens, Littleton US-CO 39.60600, -105.02322
  103. Passerina sp. Passerina sp.
    # Count: 1
    Date:
    Observer: Kevin Williams
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  104. Sturnella meadowlark sp. Sturnella sp.
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: E County Road 269, Deer Trail US-CO 39.70880, -103.79692
  105. Cliff/Cave Swallow Petrochelidon pyrrhonota/fulva
    # Count: 2
    Date:
    Observer: john williams
    Location: Cherry Creek SP
  106. Haemorhous sp. Haemorhous sp.
    # Count: 1
    Date:
    Observer: Chris Goulart
    Location: Pond at S Havana St & E Alameda Ave
  107. Branta sp. Branta sp.
    # Count: 1
    Date:
    Observer: Kevin Williams
    Location: Big Dry Creek Trail--S Colorado Blvd to S University Blvd
  108. Zonotrichia sp. Zonotrichia sp.
    # Count: 1
    Date:
    Observer: Glenn Walbek
    Location: Cherry Creek SP--Pelican Point area
  109. phalarope sp. Phalaropus sp.
    # Count: 1
    Date:
    Observer: Mitchell Bailey
    Location: Cherry Creek SP--Pelican Point area
  110. Red/Red-necked Phalarope Phalaropus fulicarius/lobatus
    # Count: 1
    Date:
    Observer: Glenn Walbek
    Location: Cherry Creek SP--Swim Beach & Smoky Hill Shelter area
  111. Forster's/Common Tern Sterna forsteri/hirundo
    # Count: 1
    Date:
    Observer: Ross Beitzel
    Location: Cherry Creek SP--Pelican Point area
  112. new world oriole sp. Icterus sp.
    # Count: 1
    Date:
    Observer: Mitchell Bailey
    Location: South Platte Park--C470 area
  113. Western/Semipalmated Sandpiper Calidris mauri/pusilla
    # Count: 1
    Date:
    Observer: Darcy Juday
    Location: Cherry Creek SP--Pelican Point area
  114. Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/traillii
    # Count: 1
    Date:
    Observer: Diane Roberts
    Location: Cherry Creek SP--Pelican Point area
  115. Ruby-throated/Black-chinned Hummingbird Archilochus colubris/alexandri
    # Count: 1
    Date:
    Observer: linda p
    Location: Cherry Creek SP--Railroad Bed Trail
  116. Herring/Glaucous-winged Gull Larus argentatus/glaucescens
    # Count: 1
    Date:
    Observer: Glenn Walbek
    Location: Aurora Reservoir
  117. tanager sp. (Piranga sp.) Piranga sp.
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: Cherry Creek SP
  118. yellow-bellied kingbird sp. Tyrannus sp. (yellow-bellied)
    # Count: 1
    Date:
    Observer: David Suddjian
    Location: Littleton - St. Mary's Catholic Church (lower area)
  119. swift sp. Apodidae sp.
    # Count: 1
    Date:
    Observer: Christopher Minchin
    Location: Vista Peak Pond
  120. Common/Yellow-billed Loon Gavia immer/adamsii
    # Count: 1
    Date:
    Observer: Cole Sage
    Location: Cherry Creek SP
  121. longspur sp. Calcarius/Rhynchophanes sp.
    # Count: 12
    Date:
    Observer: David Suddjian
    Location: ARA - CR 42 Wall Road (I-70 to CR 245)
  122. Tyrannus sp. Tyrannus sp.
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: South Platte Park
  123. Eurasian/African Collared-Dove Streptopelia decaocto/roseogrisea
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: 8800 East Caley Avenue, Greenwood Village, Colorado, US (39.602, -104.886)
  124. bird sp. Aves sp.
    # Count: 1
    Date:
    Observer: Santi Tabares
    Location: Cherry Creek SP--Cottonwood Creek Wetlands
  125. cormorant sp. Phalacrocoracidae sp.
    # Count: 2
    Date:
    Observer: Aimee Allain
    Location: Cherry Creek SP
  126. chickadee sp. Poecile sp.
    # Count: 1
    Date:
    Observer: Gene Rutherford
    Location: Stage Run Subdivision
  127. towhee sp. Melozone/Pipilo sp.
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: Parent's House
  128. phoebe sp. Sayornis sp.
    # Count: 1
    Date:
    Observer: Ben Sampson
    Location: South Platte Park
  129. Common/Arctic Tern Sterna hirundo/paradisaea
    # Count: 1
    Date:
    Observer: Gene Rutherford
    Location: Cherry Creek SP
  130. Long-tailed/Parasitic Jaeger Stercorarius longicaudus/parasiticus
    # Count: 1
    Date:
    Observer: Iván Mota
    Location: Cherry Creek SP--Marina & nearby Dam Trail
  131. Sterna sp. Sterna sp.
    # Count: 1
    Date:
    Observer: Gene Rutherford
    Location: Cherry Creek SP
  132. jaeger sp. Stercorarius sp. (jaeger sp.)
    # Count: 1
    Date:
    Observer: don beltz
    Location: Cherry Creek SP
  133. solitary vireo sp. Vireo cassinii/solitarius/plumbeus
    # Count: 1
    Date:
    Observer: Jared Del Rosso
    Location: Marjorie Perry Nature Preserve
  134. Eastern/Chihuahuan Meadowlark Sturnella magna/lilianae
    # Count: 1
    Date:
    Observer: Gene Rutherford
    Location: Englewood Grove - Private Property (not open to the public)
  135. Cooper's Hawk/American Goshawk Accipiter cooperii/atricapillus
    # Count: 1
    Date:
    Observer: Alec Hopping
    Location: Cherry Creek SP--12 Mile Trail
  136. parakeet sp. Psittaciformes sp. (parakeet sp.)
    # Count: 1
    Date:
    Observer: Cynthia Madsen
    Location: Cherry Creek SP
  137. eagle sp. Accipitridae sp. (eagle sp.)
    # Count: 1
    Date:
    Observer: Susan Barnhart
    Location: Walk the Wet Lands
  138. Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensis
    # Count: 1
    Date:
    Observer: Clint Jones
    Location: Cherry Creek SP--12 Mile Trail