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Bird List

Updated ~22 hours ago
239 All Years 161 This Year 2024 109 This Month Jun 2024
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  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (239)

  1. Brown-capped Rosy-Finch Leucosticte australis
    # Count: 1408
    Date:
    Observer: Bryan Gieszl
    Location: Home
  2. Violet-green Swallow Tachycineta thalassina
    # Count: 600
    Date:
    Observer: Rebecca Weiss
    Location: Woody Creek, Rio Grande Trailhead Parking Lot
  3. American Pipit Anthus rubescens
    # Count: 400
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  4. Canada Goose Branta canadensis
    # Count: 350
    Date:
    Observer: Dick Filby
    Location: Highway133 Pitkin County Line to KOA
  5. Mallard Anas platyrhynchos
    # Count: 292
    Date:
    Observer: Bryan Gieszl
    Location: East Brush Creek Nature Trail and Ponds
  6. American Crow Corvus brachyrhynchos
    # Count: 280
    Date:
    Observer: Bryan Gieszl
    Location: Aspen Mountain
  7. Gray-crowned Rosy-Finch Leucosticte tephrocotis
    # Count: 250
    Date:
    Observer: Mike Henwood
    Location: Snowmass
  8. Pine Siskin Spinus pinus
    # Count: 250
    Date:
    Observer: Catherine Hagen
    Location: Yard, Aspen, Colorado, US (39.189, -106.809)
  9. European Starling Sturnus vulgaris
    # Count: 200
    Date:
    Observer: Allene Morris
    Location: 4201–5299 Highway 133, Carbondale US-CO (39.3600,-107.2048)
  10. American Robin Turdus migratorius
    # Count: 200
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  11. Tree Swallow Tachycineta bicolor
    # Count: 180
    Date:
    Observer: Kathy Mihm Dunning
    Location: Capitol Creek Road Near CR-9D
  12. Common Raven Corvus corax
    # Count: 150
    Date:
    Observer: Catherine Hagen
    Location: Pitkin County Landfill (39.287, -106.912)
  13. Mountain Bluebird Sialia currucoides
    # Count: 120
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  14. Cedar Waxwing Bombycilla cedrorum
    # Count: 120
    Date:
    Observer: Catherine Hagen
    Location: Aspen Center for Environmental Studies
  15. Red-winged Blackbird Agelaius phoeniceus
    # Count: 120
    Date:
    Observer: Bryan Gieszl
    Location: Home
  16. Dark-eyed Junco Junco hyemalis
    # Count: 105
    Date:
    Observer: Bryan Gieszl
    Location: White River National Forest, Meredith US-CO 39.35902, -106.69744
  17. Ring-necked Duck Aythya collaris
    # Count: 100
    Date:
    Observer: Catherine Hagen
    Location: Aspen Center for Environmental Studies
  18. Sandhill Crane Antigone canadensis
    # Count: 100
    Date:
    Observer: Jason Hedlund
    Location: Avalanche Campground
  19. House Finch Haemorhous mexicanus
    # Count: 100
    Date:
    Observer: gene collins
    Location: Harmony Park, Aspen US-CO (39.2116,-106.8550)
  20. Red-necked Phalarope Phalaropus lobatus
    # Count: 90
    Date:
    Observer: Ernie Bradley
    Location: Snowmass Village Sewage Pond CO
  21. Cassin's Finch Haemorhous cassinii
    # Count: 90
    Date:
    Observer: Bryan Gieszl
    Location: Home
  22. Western Sandpiper Calidris mauri
    # Count: 83
    Date:
    Observer: Bryan Gieszl
    Location: Lost Man Loop Trail
  23. House Sparrow Passer domesticus
    # Count: 80
    Date:
    Observer: Catherine Hagen
    Location: Yard, Aspen, Colorado, US (39.189, -106.809)
  24. Brewer's Blackbird Euphagus cyanocephalus
    # Count: 80
    Date:
    Observer: John Anderson
    Location: East Sopris Creek Rd--Snowmass Creek Rd to Bear Ridge Rd
  25. Wild Turkey Meleagris gallopavo
    # Count: 75
    Date:
    Observer: Ryan Fuller
    Location: 5714–6298 Highway 133, Carbondale US-CO (39.3422,-107.2092)
  26. Broad-tailed Hummingbird Selasphorus platycercus
    # Count: 75
    Date:
    Observer: Susan Foster
    Location: 1367–1613 W Buttermilk Rd, Aspen US-CO 39.20477, -106.86867
  27. Evening Grosbeak Coccothraustes vespertinus
    # Count: 75
    Date:
    Observer: delia malone
    Location: Home
  28. Franklin's Gull Leucophaeus pipixcan
    # Count: 60
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  29. Black-billed Magpie Pica hudsonia
    # Count: 60
    Date:
    Observer: Mark Courtney
    Location: 2956 Emma Rd, Basalt US-CO 39.36481, -107.08512
  30. Common Goldeneye Bucephala clangula
    # Count: 52
    Date:
    Observer: Vic Zerbi
    Location: Ruedi Reservoir (Pitkin County)
  31. Wilson's Phalarope Phalaropus tricolor
    # Count: 50
    Date:
    Observer: Lauren Deriaz
    Location: Hallam Lake
  32. Pine Grosbeak Pinicola enucleator
    # Count: 50
    Date:
    Observer: Rebecca Weiss
    Location: Moore Open Space
  33. Willet Tringa semipalmata
    # Count: 49
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  34. Blue-winged Teal Spatula discors
    # Count: 46
    Date:
    Observer: Chris Daniels
    Location: Black Bess Day Use Area
  35. Rock Pigeon Columba livia
    # Count: 45
    Date:
    Observer: John Parker
    Location: Aspen (town)
  36. Band-tailed Pigeon Patagioenas fasciata
    # Count: 45
    Date:
    Observer: Larry Arnold
    Location: Hwy 82 stop
  37. Yellow-rumped Warbler Setophaga coronata
    # Count: 45
    Date:
    Observer: michael kiessig
    Location: Aspen Mountain
  38. Cliff Swallow Petrochelidon pyrrhonota
    # Count: 44
    Date:
    Observer: Kathy Mihm Dunning
    Location: Capitol Creek Road Near CR-9D
  39. Gadwall Mareca strepera
    # Count: 43
    Date:
    Observer: Bryan Gieszl
    Location: Snowmass Rodeo wetlands
  40. Green-winged Teal Anas crecca
    # Count: 40
    Date:
    Observer: Phebe Meyers
    Location: Aspen Center for Environmental Studies
  41. Eurasian Collared-Dove Streptopelia decaocto
    # Count: 40
    Date:
    Observer: Catherine Hagen
    Location: Emma Trail, Basalt, Colorado, US (39.366, -107.048)
  42. White-throated Swift Aeronautes saxatalis
    # Count: 40
    Date:
    Observer: William Kaempfer
    Location: Pitkin County Line Beaver Ponds
  43. Black-capped Chickadee Poecile atricapillus
    # Count: 40
    Date:
    Observer: Nick Moore
    Location: Aspen Center for Environmental Studies
  44. Mountain Chickadee Poecile gambeli
    # Count: 40
    Date:
    Observer: Edward Raynor
    Location: Maroon Bells Wilderness
  45. Bohemian Waxwing Bombycilla garrulus
    # Count: 40
    Date:
    Observer: Anonymous eBirder
    Location: CO Aspen
  46. Chipping Sparrow Spizella passerina
    # Count: 40
    Date:
    Observer: Lisa Ayres
    Location: Meadowood Drive Private
  47. White-crowned Sparrow Zonotrichia leucophrys
    # Count: 40
    Date:
    Observer: John Anderson
    Location: Marolt Open Space
  48. Barn Swallow Hirundo rustica
    # Count: 39
    Date:
    Observer: Bryan Gieszl
    Location: East Brush Creek Nature Trail and Ponds
  49. Bushtit Psaltriparus minimus
    # Count: 39
    Date:
    Observer: Jake Glassman
    Location: Red Canyon Trail
  50. Horned Lark Eremophila alpestris
    # Count: 35
    Date:
    Observer: Rebecca Weiss
    Location: Green Mountain and ridge to west
  51. Northern Rough-winged Swallow Stelgidopteryx serripennis
    # Count: 35
    Date:
    Observer: Rebecca Weiss
    Location: Child Ranch
  52. Brown-headed Cowbird Molothrus ater
    # Count: 35
    Date:
    Observer: Liz Bokram
    Location: 2759 County Road 12, Aspen, Colorado, US (39.212, -106.901) (Private)
  53. Pinyon Jay Gymnorhinus cyanocephalus
    # Count: 31
    Date:
    Observer: Kathy Mihm Dunning
    Location: Emma
  54. Turkey Vulture Cathartes aura
    # Count: 30
    Date:
    Observer: Catherine Hagen
    Location: Emma Trail, Basalt, Colorado, US (39.366, -107.048)
  55. Black Rosy-Finch Leucosticte atrata
    # Count: 30
    Date:
    Observer: Bryan Gieszl
    Location: Home
  56. Red Crossbill Loxia curvirostra
    # Count: 30
    Date:
    Observer: Chris Daniels
    Location: Chapman Campground
  57. Common Merganser Mergus merganser
    # Count: 29
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  58. Green-tailed Towhee Pipilo chlorurus
    # Count: 28
    Date:
    Observer: Bryan Gieszl
    Location: Rio Grande Trail--Cemetery Lane Bridge to Jaffee Park
  59. American Coot Fulica americana
    # Count: 26
    Date:
    Observer: Bryan Gieszl
    Location: East Brush Creek Nature Trail and Ponds
  60. Warbling Vireo Vireo gilvus
    # Count: 26
    Date:
    Observer: Catherine Hagen
    Location: Difficult Campground
  61. Yellow Warbler Setophaga petechia
    # Count: 26
    Date:
    Observer: Nancy Peterson
    Location: Wetlands near Hwy 133 and Pitkin CR 3
  62. Song Sparrow Melospiza melodia
    # Count: 25
    Date:
    Observer: Catherine Hagen
    Location: Aspen Center for Environmental Studies
  63. Purple Martin Progne subis
    # Count: 24
    Date:
    Observer: Bryan Gieszl
    Location: 1471 Owl Creek Ranch Rd, Aspen US-CO 39.21138, -106.90520
  64. Bufflehead Bucephala albeola
    # Count: 23
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  65. Steller's Jay Cyanocitta stelleri
    # Count: 22
    Date:
    Observer: Dick Filby
    Location: Fox Run / Two Creeks Drive area, Snowmass Colorado, US (39.211, -106.926)
  66. Pygmy Nuthatch Sitta pygmaea
    # Count: 22
    Date:
    Observer: Jacob C. Cooper
    Location: Redstone (town)
  67. Red-breasted Nuthatch Sitta canadensis
    # Count: 22
    Date:
    Observer: Cody Funk
    Location: McClure pass
  68. Dusky Flycatcher Empidonax oberholseri
    # Count: 21
    Date:
    Observer: Eric DeFonso 🦑
    Location: Crown Recreation Area survey 3 (Pitkin)
  69. Golden-crowned Kinglet Regulus satrapa
    # Count: 21
    Date:
    Observer: Kathy Mihm Dunning
    Location: Capitol Creek Trail - Capitol Creek Crossing to Grazing Boundary
  70. Wilson's Warbler Cardellina pusilla
    # Count: 21
    Date:
    Observer: Bryan Gieszl
    Location: East Brush Creek Nature Trail and Ponds
  71. Woodhouse's Scrub-Jay Aphelocoma woodhouseii
    # Count: 20
    Date:
    Observer: Catherine Hagen
    Location: Midland Park Place, Aspen, Colorado, US (39.189, -106.809)
  72. Clark's Nutcracker Nucifraga columbiana
    # Count: 20
    Date:
    Observer: Jay Q.
    Location: Arbaney Kittle Trail
  73. Ruby-crowned Kinglet Corthylio calendula
    # Count: 20
    Date:
    Observer: Grey Barbier
    Location: Aspen Mountain
  74. House Wren Troglodytes aedon
    # Count: 20
    Date:
    Observer: Liz Bokram
    Location: Wildcat Way, Snowmass, Colorado, US (39.283, -106.906) (Private)
  75. Vesper Sparrow Pooecetes gramineus
    # Count: 20
    Date:
    Observer: Rebecca Weiss
    Location: Moore Open Space
  76. Great Blue Heron Ardea herodias
    # Count: 19
    Date:
    Observer: John Anderson
    Location: Woody Creek Rd (Pitkin CR 18)--Upper River Rd to Canyon Mouth
  77. Common Redpoll Acanthis flammea
    # Count: 19
    Date:
    Observer: Kyle Doolan
    Location: 99 Aspen Village Rd.Aspen CO
  78. Lincoln's Sparrow Melospiza lincolnii
    # Count: 18
    Date:
    Observer: Kathy Mihm Dunning
    Location: Fryingpan Lakes Trail - Lower Lake
  79. Spotted Towhee Pipilo maculatus
    # Count: 18
    Date:
    Observer: sage church
    Location: 81621, Basalt US-CO (39.3633,-107.1212)
  80. American Goldfinch Spinus tristis
    # Count: 17
    Date:
    Observer: Catherine Hagen
    Location: Yard, Aspen, Colorado, US (39.189, -106.809)
  81. Black-headed Grosbeak Pheucticus melanocephalus
    # Count: 17
    Date:
    Observer: George Waaler
    Location: Wagon Wheel Trail
  82. American Wigeon Mareca americana
    # Count: 16
    Date:
    Observer: Kathy Mihm Dunning
    Location: Aspen Center for Environmental Studies
  83. Snow Goose Anser caerulescens
    # Count: 15
    Date:
    Observer: Chris Daniels
    Location: 4001–4327 SH-133, Carbondale US-CO 39.36275, -107.20381
  84. Cackling Goose Branta hutchinsii
    # Count: 15
    Date:
    Observer: Bryan Gieszl
    Location: 4001–4327 SH-133, Carbondale US-CO 39.36431, -107.20346
  85. Canada Jay Perisoreus canadensis
    # Count: 15
    Date:
    Observer: Nick Moore
    Location: Maroon Lake area
  86. Western Tanager Piranga ludoviciana
    # Count: 15
    Date:
    Observer: George Waaler
    Location: Wagon Wheel Trail
  87. White-tailed Ptarmigan Lagopus leucura
    # Count: 14
    Date:
    Observer: Andre Wille
    Location: pearl pass aspen co
  88. Mourning Dove Zenaida macroura
    # Count: 14
    Date:
    Observer: Bryan Gieszl
    Location: 2700–2984 Emma Rd, Basalt US-CO 39.36480, -107.08388
  89. Common Nighthawk Chordeiles minor
    # Count: 14
    Date:
    Observer: Timo Mitzen
    Location: Thomas Lakes/Sopris Trail
  90. Western Wood-Pewee Contopus sordidulus
    # Count: 14
    Date:
    Observer: Colin Woolley
    Location: Mount Sopris Trail, Basalt, Colorado, US (39.284, -107.132)
  91. Western Flycatcher Empidonax difficilis
    # Count: 14
    Date:
    Observer: David Suddjian
    Location: Redstone (town)
  92. Virginia's Warbler Leiothlypis virginiae
    # Count: 14
    Date:
    Observer: sage church
    Location: 81621, Basalt US-CO (39.3633,-107.1212)
  93. Black-throated Gray Warbler Setophaga nigrescens
    # Count: 14
    Date:
    Observer: John Anderson
    Location: Red Rim Road (FSR #534)—Piñyon-Juniper Woodlands
  94. Northern Shoveler Spatula clypeata
    # Count: 13
    Date:
    Observer: Phebe Meyers
    Location: Aspen Center for Environmental Studies
  95. Rufous Hummingbird Selasphorus rufus
    # Count: 13
    Date:
    Observer: Bryan Gieszl
    Location: Home
  96. Ring-billed Gull Larus delawarensis
    # Count: 13
    Date:
    Observer: Vic Zerbi
    Location: Ruedi Reservoir (Pitkin County)
  97. American Dipper Cinclus mexicanus
    # Count: 13
    Date:
    Observer: Rebecca Weiss
    Location: Wilton Jaffee Sr Park
  98. Orange-crowned Warbler Leiothlypis celata
    # Count: 13
    Date:
    Observer: Eric DeFonso 🦑
    Location: Crown Recreation Area survey 3 (Pitkin)
  99. Redhead Aythya americana
    # Count: 12
    Date:
    Observer: Bryan Gieszl
    Location: East Brush Creek Nature Trail and Ponds
  100. Swainson's Thrush Catharus ustulatus
    # Count: 12
    Date:
    Observer: Catherine Hagen
    Location: Difficult Campground
  101. MacGillivray's Warbler Geothlypis tolmiei
    # Count: 12
    Date:
    Observer: Catherine Hagen
    Location: Maroon Creek Trail, Aspen, Colorado, US (39.104, -106.926)
  102. Western Kingbird Tyrannus verticalis
    # Count: 11
    Date:
    Observer: Lindsey Judd
    Location: 406 Aspen Airport Business Center, Aspen, Colorado, US (39.22, -106.859)
  103. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: 11
    Date:
    Observer: Bryan Gieszl
    Location: Viewline trail on Sky Mountain Park
  104. Brewer's Sparrow Spizella breweri
    # Count: 11
    Date:
    Observer: Vic Zerbi
    Location: S. Thompson Creek Road
  105. Rock Wren Salpinctes obsoletus
    # Count: 10
    Date:
    Observer: Hugh Kingery
    Location: Elks - Castle Paek
  106. Savannah Sparrow Passerculus sandwichensis
    # Count: 10
    Date:
    Observer: Matt Blaze
    Location: John Denver Meadowlands
  107. Common Grackle Quiscalus quiscula
    # Count: 10
    Date:
    Observer: Thomas Halverstadt
    Location: Aspen Center for Environmental Studies
  108. Western Grebe Aechmophorus occidentalis
    # Count: 9
    Date:
    Observer: Catherine Hagen
    Location: Frying Pan Road, Basalt, Colorado, US (39.362, -106.75)
  109. Black-chinned Hummingbird Archilochus alexandri
    # Count: 9
    Date:
    Observer: Catherine Hagen
    Location: Difficult Campground Road and Campground, Aspen, Colorado, US (39.148, -106.778)
  110. Calliope Hummingbird Selasphorus calliope
    # Count: 9
    Date:
    Observer: Catherine Hagen
    Location: 232 West Hyman Avenue, Aspen
  111. Forster's Tern Sterna forsteri
    # Count: 9
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  112. Gray Catbird Dumetella carolinensis
    # Count: 9
    Date:
    Observer: Bryan Gieszl
    Location: East Brush Creek Nature Trail and Ponds
  113. Hermit Thrush Catharus guttatus
    # Count: 9
    Date:
    Observer: Josh Lefever
    Location: White River NF - Huntsmans Ridge Survey Area
  114. Lark Sparrow Chondestes grammacus
    # Count: 9
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  115. Fox Sparrow Passerella iliaca
    # Count: 9
    Date:
    Observer: Catherine Hagen
    Location: Difficult Campground
  116. Dusky Grouse Dendragapus obscurus
    # Count: 8
    Date:
    Observer: Chris Daniels
    Location: Avalanche Creek
  117. Black Swift Cypseloides niger
    # Count: 8
    Date:
    Observer: Nick Lund
    Location: Maroon Bells Wilderness
  118. Spotted Sandpiper Actitis macularius
    # Count: 8
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  119. Bald Eagle Haliaeetus leucocephalus
    # Count: 8
    Date:
    Observer: John Anderson
    Location: Woody Creek Rd (Pitkin CR 18)--Upper River Rd to Canyon Mouth
  120. Northern Flicker Colaptes auratus
    # Count: 8
    Date:
    Observer: Donald Verser
    Location: 926–992 W Sopris Creek Rd, Basalt US-CO 39.34344, -107.07545
  121. Brown Creeper Certhia americana
    # Count: 8
    Date:
    Observer: Whitney Mortimer
    Location: Difficult Campground
  122. Townsend's Solitaire Myadestes townsendi
    # Count: 8
    Date:
    Observer: Jake Glassman
    Location: Red Canyon Trail
  123. Townsend's Warbler Setophaga townsendi
    # Count: 8
    Date:
    Observer: Rebecca Weiss
    Location: Spark Hill Saddle area and ridge to east
  124. Cinnamon Teal Spatula cyanoptera
    # Count: 7
    Date:
    Observer: Bryan Gieszl
    Location: East Brush Creek Nature Trail and Ponds
  125. Hooded Merganser Lophodytes cucullatus
    # Count: 7
    Date:
    Observer: Liz Bokram
    Location: Lake Wildcat Way, Snowmass, Colorado, US (39.243, -106.953) Private
  126. Red-tailed Hawk Buteo jamaicensis
    # Count: 7
    Date:
    Observer: John Anderson
    Location: Woody Creek Rd (Pitkin CR 18)--Upper River Rd to Canyon Mouth
  127. Lesser Goldfinch Spinus psaltria
    # Count: 7
    Date:
    Observer: Doug Kibbe
    Location: Arbaney Kittle Trail
  128. Yellow-headed Blackbird Xanthocephalus xanthocephalus
    # Count: 7
    Date:
    Observer: Bryan Gieszl
    Location: East Brush Creek Nature Trail and Ponds
  129. Western Meadowlark Sturnella neglecta
    # Count: 7
    Date:
    Observer: Vic Zerbi
    Location: Capitol Creek Rd (Pitkin CR 9)--Monastery Rd to Snowmass Creek Rd
  130. Barrow's Goldeneye Bucephala islandica
    # Count: 6
    Date:
    Observer: Vic Zerbi
    Location: Ruedi Reservoir (Pitkin County)
  131. Ruddy Duck Oxyura jamaicensis
    # Count: 6
    Date:
    Observer: Susan Foster
    Location: Aspen
  132. Pied-billed Grebe Podilymbus podiceps
    # Count: 6
    Date:
    Observer: Rebecca Weiss
    Location: Aspen Center for Environmental Studies
  133. American Avocet Recurvirostra americana
    # Count: 6
    Date:
    Observer: Chris Daniels
    Location: Black Bess Day Use Area
  134. Wilson's Snipe Gallinago delicata
    # Count: 6
    Date:
    Observer: Eric DeFonso 🦑
    Location: East Sopris Creek Rd--Snowmass Creek Rd to Bear Ridge Rd
  135. Red-naped Sapsucker Sphyrapicus nuchalis
    # Count: 6
    Date:
    Observer: Eric Myskowski
    Location: Maroon Lake area
  136. Downy Woodpecker Dryobates pubescens
    # Count: 6
    Date:
    Observer: Susan Foster
    Location: North Star Nature Preserve, Aspen US-CO 39.17337, -106.79325
  137. White-breasted Nuthatch Sitta carolinensis
    # Count: 6
    Date:
    Observer: Mike Edgecombe
    Location: White River National Forest, Basalt US-CO 39.30482, -107.09942
  138. Cassia Crossbill Loxia sinesciuris
    # Count: 6
    Date:
    Observer: Chris Daniels
    Location: Government Trail
  139. American Tree Sparrow Spizelloides arborea
    # Count: 6
    Date:
    Observer: Bryan Gieszl
    Location: 1885–3303 Capitol Creek Rd, Snowmass US-CO 39.29222, -107.01224
  140. Bullock's Oriole Icterus bullockii
    # Count: 6
    Date:
    Observer: Catherine Hagen
    Location: Western Mobile Mountain, Snowmass, Colorado, US (39.272, -106.884)
  141. Lazuli Bunting Passerina amoena
    # Count: 6
    Date:
    Observer: Sanford Sorkin
    Location: Hunter Creek
  142. Lesser Scaup Aythya affinis
    # Count: 5
    Date:
    Observer: Bryan Gieszl
    Location: East Brush Creek Nature Trail and Ponds
  143. Eared Grebe Podiceps nigricollis
    # Count: 5
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  144. Killdeer Charadrius vociferus
    # Count: 5
    Date:
    Observer: Liz Bokram
    Location: 2759 County Road 12, Aspen, Colorado, US (39.212, -106.901) (Private)
  145. Osprey Pandion haliaetus
    # Count: 5
    Date:
    Observer: Catherine Hagen
    Location: Emma Road, Basalt, Colorado, US (39.365, -107.059)
  146. Lewis's Woodpecker Melanerpes lewis
    # Count: 5
    Date:
    Observer: John Anderson
    Location: Emma Open Space
  147. Olive-sided Flycatcher Contopus cooperi
    # Count: 5
    Date:
    Observer: Rob Norville
    Location: Chapman Campground
  148. Hammond's Flycatcher Empidonax hammondii
    # Count: 5
    Date:
    Observer: Andy Liu
    Location: Wetlands near Hwy 133 and Pitkin CR 3
  149. Plumbeous Vireo Vireo plumbeus
    # Count: 5
    Date:
    Observer: Chris Daniels
    Location: Windstar Ranch Loop Trail
  150. Loggerhead Shrike Lanius ludovicianus
    # Count: 5
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  151. Sage Thrasher Oreoscoptes montanus
    # Count: 5
    Date:
    Observer: diana beatty
    Location: Independence Pass
  152. Northern Pintail Anas acuta
    # Count: 4
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  153. Common Poorwill Phalaenoptilus nuttallii
    # Count: 4
    Date:
    Observer: Luke Pheneger
    Location: Crown Hill
  154. Great Horned Owl Bubo virginianus
    # Count: 4
    Date:
    Observer: Chris Daniels
    Location: Snowmass
  155. Northern Pygmy-Owl Glaucidium gnoma
    # Count: 4
    Date:
    Observer: Loch Kilpatrick
    Location: Redstone (town)
  156. Belted Kingfisher Megaceryle alcyon
    # Count: 4
    Date:
    Observer: Catherine Hagen
    Location: Aspen Center for Environmental Studies
  157. American Three-toed Woodpecker Picoides dorsalis
    # Count: 4
    Date:
    Observer: Matt Kuhn
    Location: Ivanhoe area
  158. Hairy Woodpecker Dryobates villosus
    # Count: 4
    Date:
    Observer: Bryan Gieszl
    Location: Red Rim and Triangle Mountain Trails
  159. American Kestrel Falco sparverius
    # Count: 4
    Date:
    Observer: John Anderson
    Location: East Sopris Creek Rd--Snowmass Creek Rd to Bear Ridge Rd
  160. Willow Flycatcher Empidonax traillii
    # Count: 4
    Date:
    Observer: Eric DeFonso 🦑
    Location: East Sopris Creek Rd--Snowmass Creek Rd to Bear Ridge Rd
  161. Veery Catharus fuscescens
    # Count: 4
    Date:
    Observer: Hugh Kingery
    Location: Elks - Snowmass, Capitol, & Maroons
  162. Wood Duck Aix sponsa
    # Count: 3
    Date:
    Observer: Joan Larrabee
    Location: Aspen Center for Environmental Studies
  163. Virginia Rail Rallus limicola
    # Count: 3
    Date:
    Observer: Bryan Gieszl
    Location: Emma Open Space
  164. Sora Porzana carolina
    # Count: 3
    Date:
    Observer: Rebecca Weiss
    Location: Northstar, Private Property, Aspen, Colorado, US
  165. Golden Eagle Aquila chrysaetos
    # Count: 3
    Date:
    Observer: John Anderson
    Location: Woody Creek Rd (Pitkin CR 18)--Upper River Rd to Canyon Mouth
  166. Northern Harrier Circus hudsonius
    # Count: 3
    Date:
    Observer: Catherine Hagen
    Location: County Road 6, Basalt, Colorado, US
  167. Sharp-shinned Hawk Accipiter striatus
    # Count: 3
    Date:
    Observer: Guy Grisham
    Location: Little Cloud Trail
  168. Cooper's Hawk Accipiter cooperii
    # Count: 3
    Date:
    Observer: Michele Ostrander
    Location: White River National Forest, Carbondale US-CO 39.19896, -107.23068
  169. Swainson's Hawk Buteo swainsoni
    # Count: 3
    Date:
    Observer: paul Crespi
    Location: Snowmass, CO
  170. Flammulated Owl Psiloscops flammeolus
    # Count: 3
    Date:
    Observer: Chris Daniels
    Location: Sunnyside Trail, Aspen US-CO 39.22893, -106.82680
  171. Williamson's Sapsucker Sphyrapicus thyroideus
    # Count: 3
    Date:
    Observer: Vic Zerbi
    Location: Haystack Gate - Pitkin County (FS Road 800)
  172. Say's Phoebe Sayornis saya
    # Count: 3
    Date:
    Observer: Catherine Hagen
    Location: Windstar, Snowmass Creek Road, Snowmass, Colorado, US (39.302, -106.973)
  173. Bank Swallow Riparia riparia
    # Count: 3
    Date:
    Observer: Nathan Pieplow
    Location: East Brush Creek Nature Trail and Ponds
  174. Marsh Wren Cistothorus palustris
    # Count: 3
    Date:
    Observer: Bryan Gieszl
    Location: Clubhouse ponds
  175. White-throated Sparrow Zonotrichia albicollis
    # Count: 3
    Date:
    Observer: Alexa Sarussi
    Location: Aspen Center for Environmental Studies
  176. Common Yellowthroat Geothlypis trichas
    # Count: 3
    Date:
    Observer: Bryan Gieszl
    Location: Marolt Open Space
  177. Greater White-fronted Goose Anser albifrons
    # Count: 2
    Date:
    Observer: Ann Larson
    Location: Snowmass Ski Area, Aspen US-CO (39.2122,-106.8992)
  178. Trumpeter Swan Cygnus buccinator
    # Count: 2
    Date:
    Observer: Rob Norville
    Location: Roaring Fork Club
  179. Red-breasted Merganser Mergus serrator
    # Count: 2
    Date:
    Observer: Vic Zerbi
    Location: Ruedi Reservoir (Pitkin County)
  180. Black-necked Stilt Himantopus mexicanus
    # Count: 2
    Date:
    Observer: John Anderson
    Location: East Brush Creek Nature Trail and Ponds
  181. Solitary Sandpiper Tringa solitaria
    # Count: 2
    Date:
    Observer: Chris Daniels
    Location: Aspen Center for Environmental Studies
  182. Lesser Yellowlegs Tringa flavipes
    # Count: 2
    Date:
    Observer: Catherine Hagen
    Location: East Brush Creek Nature Trail and Ponds
  183. Greater Yellowlegs Tringa melanoleuca
    # Count: 2
    Date:
    Observer: Rebecca Weiss
    Location: East Brush Creek Nature Trail and Ponds
  184. Baird's Sandpiper Calidris bairdii
    # Count: 2
    Date:
    Observer: Stefan Hilts
    Location: Independence Pass
  185. California Gull Larus californicus
    # Count: 2
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  186. Double-crested Cormorant Nannopterum auritum
    # Count: 2
    Date:
    Observer: Gabriel Wiltse
    Location: Roaring Fork in Basalt (Pitkin Co.)
  187. American White Pelican Pelecanus erythrorhynchos
    # Count: 2
    Date:
    Observer: Vic Zerbi
    Location: Ruedi Reservoir (Pitkin County)
  188. American Goshawk Accipiter atricapillus
    # Count: 2
    Date:
    Observer: David Rosier
    Location: White River National Forest, Meredith US-CO (39.1594,-106.6624)
  189. Rough-legged Hawk Buteo lagopus
    # Count: 2
    Date:
    Observer: Vic Zerbi
    Location: Pitkin Cty Rd 7 (E. Sopris Creek Rd)
  190. Northern Saw-whet Owl Aegolius acadicus
    # Count: 2
    Date:
    Observer: Bryan Gieszl
    Location: Snowmass Village--Ditch Trail
  191. Peregrine Falcon Falco peregrinus
    # Count: 2
    Date:
    Observer: Jonalyn Yancey
    Location: White River National Forest, Carbondale US-CO (39.1676,-107.2503)
  192. Prairie Falcon Falco mexicanus
    # Count: 2
    Date:
    Observer: James Lee
    Location: Independence Pass
  193. Gray Flycatcher Empidonax wrightii
    # Count: 2
    Date:
    Observer: Alessandro Molina
    Location: Arbaney Kittle Trail
  194. Eastern Kingbird Tyrannus tyrannus
    # Count: 2
    Date:
    Observer: Catherine Hagen
    Location: Aspen Center for Environmental Studies
  195. Cassin's Vireo Vireo cassinii
    # Count: 2
    Date:
    Observer: Chris Daniels
    Location: Marolt Open Space
  196. Juniper Titmouse Baeolophus ridgwayi
    # Count: 2
    Date:
    Observer: Rebecca Weiss
    Location: 4140–4324 E Sopris Creek Rd, Basalt US-CO 39.32109, -107.02696
  197. Western Bluebird Sialia mexicana
    # Count: 2
    Date:
    Observer: Peter Daigle
    Location: East Brush Creek Nature Trail and Ponds
  198. Clay-colored Sparrow Spizella pallida
    # Count: 2
    Date:
    Observer: Chris Daniels
    Location: Marolt Open Space
  199. Chestnut-sided Warbler Setophaga pensylvanica
    # Count: 2
    Date:
    Observer: Vic Zerbi
    Location: McClure Pass
  200. Mexican Duck Anas diazi
    # Count: 1
    Date:
    Observer: Nathan Pieplow
    Location: Aspen Mass Open Space
  201. Long-tailed Duck Clangula hyemalis
    # Count: 1
    Date:
    Observer: Vic Zerbi
    Location: Ruedi Reservoir (Pitkin County)
  202. Horned Grebe Podiceps auritus
    # Count: 1
    Date:
    Observer: Vic Zerbi
    Location: Ruedi Reservoir (Pitkin County)
  203. Rivoli's Hummingbird Eugenes fulgens
    # Count: 1
    Date:
    Observer: Vic Zerbi
    Location: Aspen Center for Environmental Studies
  204. Long-billed Dowitcher Limnodromus scolopaceus
    # Count: 1
    Date:
    Observer: Chris Daniels
    Location: Independence Pass
  205. Least Sandpiper Calidris minutilla
    # Count: 1
    Date:
    Observer: Bryan Gieszl
    Location: Independence Pass
  206. Pacific Loon Gavia pacifica
    # Count: 1
    Date:
    Observer: Reid Greiner
    Location: Ruedi Reservoir (Pitkin County)
  207. Common Loon Gavia immer
    # Count: 1
    Date:
    Observer: Carol Ortenzio
    Location: Ruedi Reservoir
  208. Black-crowned Night Heron Nycticorax nycticorax
    # Count: 1
    Date:
    Observer: Reed Gorner
    Location: Chapman Campground
  209. Great Egret Ardea alba
    # Count: 1
    Date:
    Observer: Catherine Hagen
    Location: Northstar, Private Property, Aspen, Colorado, US
  210. White-faced Ibis Plegadis chihi
    # Count: 1
    Date:
    Observer: Catherine Hagen
    Location: Independence Pass
  211. Ferruginous Hawk Buteo regalis
    # Count: 1
    Date:
    Observer: Kathy Mihm Dunning
    Location: Midway Pass Trail - Wilderness Boundary to Treeline
  212. Burrowing Owl Athene cunicularia
    # Count: 1
    Date:
    Observer: Rebecca Weiss
    Location: Aspen Golf Club, Aspen US-CO 39.20096, -106.84688
  213. Long-eared Owl Asio otus
    # Count: 1
  214. Short-eared Owl Asio flammeus
    # Count: 1
    Date:
    Observer: Buzz Scher
    Location: Capitol Creek Rd (Pitkin CR 9)--Monastery Rd to Snowmass Creek Rd
  215. Boreal Owl Aegolius funereus
    # Count: 1
    Date:
    Observer: Nicholas Koebley
    Location: Maroon Lake area
  216. Merlin Falco columbarius
    # Count: 1
    Date:
    Observer: Dick Filby
    Location: 425 Gerbaz Way, Snowmass, Colorado, US (39.299, -106.919)
  217. Ash-throated Flycatcher Myiarchus cinerascens
    # Count: 1
    Date:
    Observer: Bryan Gieszl
    Location: Fairview Cemetery (Basalt)
  218. Red-eyed Vireo Vireo olivaceus
    # Count: 1
    Date:
    Observer: Angela Holbrook
    Location: Colorado - Difficult Campground
  219. Northern Shrike Lanius borealis
    # Count: 1
    Date:
    Observer: Chris Daniels
    Location: 1200–1332 Owl Creek Rd, Aspen US-CO (39.2209,-106.8739)
  220. Blue Jay Cyanocitta cristata
    # Count: 1
    Date:
    Observer: Catherine Hagen
    Location: 420 Cemetery Lane, Aspen Golf Course, Colorado, US (39.197, -106.835)
  221. Canyon Wren Catherpes mexicanus
    # Count: 1
    Date:
    Observer: Bryan Gieszl
    Location: Rocky Fork, Meredith US-CO 39.35819, -106.82043
  222. Pacific Wren Troglodytes pacificus
    # Count: 1
    Date:
    Observer: Jason Gregg
    Location: Lily Lake Trail
  223. Curve-billed Thrasher Toxostoma curvirostre
    # Count: 1
    Date:
    Observer: Coen Dexter
    Location: Curve-billed Thrasher stake-out
  224. Northern Mockingbird Mimus polyglottos
    # Count: 1
    Date:
    Observer: Jim Prall
    Location: John Denver Sanctuary
  225. Grasshopper Sparrow Ammodramus savannarum
    # Count: 1
    Date:
    Observer: Catherine Hagen
    Location: Aspen Meadows, Aspen, Colorado, US (39.202, -106.831)
  226. Lark Bunting Calamospiza melanocorys
    # Count: 1
    Date:
    Observer: Catherine Hagen
    Location: Meadows Rd trails
  227. Golden-crowned Sparrow Zonotrichia atricapilla
    # Count: 1
    Date:
    Observer: Colorado Bird Records Committee
    Location: Aspen
  228. Harris's Sparrow Zonotrichia querula
    # Count: 1
    Date:
    Observer: George Waaler
    Location: 478 Oak Ridge Rd, Snowmass Village US-CO 39.22804, -106.93214
  229. Swamp Sparrow Melospiza georgiana
    # Count: 1
    Date:
    Observer: Bryan Gieszl
    Location: East Brush Creek Nature Trail and Ponds
  230. Yellow-breasted Chat Icteria virens
    # Count: 1
    Date:
    Observer: Bryan Gieszl
    Location: East Brush Creek Nature Trail and Ponds
  231. Baltimore Oriole Icterus galbula
    # Count: 1
    Date:
    Observer: Vic Zerbi
    Location: Thomas Road
  232. Northern Waterthrush Parkesia noveboracensis
    # Count: 1
    Date:
    Observer: Edward Buckler
    Location: Aspen Center for Environmental Studies
  233. Blue-winged Warbler Vermivora cyanoptera
    # Count: 1
    Date:
    Observer: Catherine Hagen
    Location: Community Garden and Marolt Open Space, Aspen, Colorado, US (39.195, -106.835)
  234. Nashville Warbler Leiothlypis ruficapilla
    # Count: 1
    Date:
    Observer: John Anderson
    Location: Marolt Open Space
  235. American Redstart Setophaga ruticilla
    # Count: 1
    Date:
    Observer: John Anderson
    Location: Woody Creek Rd (Pitkin CR 18)--Upper River Rd to Canyon Mouth
  236. Northern Parula Setophaga americana
    # Count: 1
    Date:
    Observer: Larry Arnold
    Location: Private Neighborhood (General Location)
  237. Rose-breasted Grosbeak Pheucticus ludovicianus
    # Count: 1
    Date:
    Observer: Bryan Gieszl
    Location: Home
  238. Blue Grosbeak Passerina caerulea
    # Count: 1
    Date:
    Observer: Catherine Hagen
    Location: Bus Barn Lane, Aspen, Colorado, US (39.191, -106.847)
  239. Indigo Bunting Passerina cyanea
    # Count: 1
    Date:
    Observer: Vic Zerbi
    Location: East Brush Creek Nature Trail and Ponds

Exotic: Escapee (2)

  1. Chukar Alectoris chukar
    # Count: 8
    Date:
    Observer: Christopher Skelton
    Location: 25427-25787 Colorado 82, Aspen, Colorado, US (39.179, -106.801)
  2. Mute Swan Cygnus olor
    # Count: 1
    Date:
    Observer: Narca Moore
    Location: US-CO-Pitkin—Aspen - bike trail to Northstar Preserve

Additional Taxa (74)

  1. rosy-finch sp. Leucosticte sp.
    # Count: 700
    Date:
    Observer: Bryan Gieszl
    Location: Home
  2. swallow sp. Hirundinidae sp.
    # Count: 400
    Date:
    Observer: Catherine Hagen
    Location: Jaffee Park River Gorge, Aspen, Colorado, US (39.255, -106.881)
  3. passerine sp. Passeriformes sp.
    # Count: 150
    Date:
    Observer: Bryan Gieszl
    Location: Home
  4. shorebird sp. Charadriiformes sp.
    # Count: 50
    Date:
    Observer: Bryan Gieszl
    Location: Lost Man Loop Trail
  5. blackbird sp. Icteridae sp.
    # Count: 45
    Date:
    Observer: Rebecca Weiss
    Location: Marolt Open Space
  6. dabbling duck sp. Anatidae sp. (dabbling duck sp.)
    # Count: 30
    Date:
    Observer: Jack Bushong
    Location: Ruedi Reservoir (Pitkin County)
  7. Blue-winged/Cinnamon Teal Spatula discors/cyanoptera
    # Count: 25
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  8. duck sp. Anatidae (duck sp.)
    # Count: 20
    Date:
    Observer: Jason Gregg
    Location: Snowmass Rodeo Pond
  9. Black-capped/Mountain Chickadee Poecile atricapillus/gambeli
    # Count: 15
    Date:
    Observer: Rebecca Weiss
    Location: Aspen Center for Environmental Studies
  10. Glossy/White-faced Ibis Plegadis falcinellus/chihi
    # Count: 14
    Date:
    Observer: John Anderson
    Location: Emma Open Space
  11. Bohemian/Cedar Waxwing Bombycilla garrulus/cedrorum
    # Count: 14
    Date:
    Observer: Michael Stein
    Location: Aspen Center for Environmental Studies
  12. new world sparrow sp. Passerellidae sp.
    # Count: 14
    Date:
    Observer: Bryan Gieszl
    Location: Northstar Preserve, East Aspen trail
  13. swift sp. Apodidae sp.
    # Count: 10
    Date:
    Observer: Phebe Meyers
    Location: 81611, Aspen US-CO (39.2091,-106.8430)
  14. hummingbird sp. Trochilidae sp.
    # Count: 10
    Date:
    Observer: Sydney McBrayer
    Location: home
  15. crow/raven sp. Corvus sp.
    # Count: 10
    Date:
    Observer: Jake Glassman
    Location: Red Canyon Trail
  16. chickadee sp. Poecile sp.
    # Count: 10
    Date:
    Observer: Jason Gregg
    Location: Aspen Center for Environmental Studies
  17. pigeon/dove sp. Columbidae sp.
    # Count: 9
    Date:
    Observer: Catherine Hagen
    Location: 72 Sopris Creek Road, Basalt, Colorado, US (39.364, -107.062)
  18. woodpecker sp. Picidae sp.
    # Count: 8
    Date:
    Observer: Bryan Gieszl
    Location: Red Rim and Triangle Mountain Trails
  19. finch sp. Fringillidae sp.
    # Count: 8
    Date:
    Observer: Rebecca Weiss
    Location: Aspen Center for Environmental Studies
  20. bluebird sp. Sialia sp.
    # Count: 7
    Date:
    Observer: Rebecca Weiss
    Location: Marolt Open Space
  21. Downy/Hairy Woodpecker Dryobates pubescens/villosus
    # Count: 6
    Date:
    Observer: Ann Larson
    Location: Sleigh Ride Trail - From Divide Road to Top of the Village
  22. Spizella sp. Spizella sp.
    # Count: 6
    Date:
    Observer: Rebecca Weiss
    Location: Marolt Open Space
  23. Common/Barrow's Goldeneye Bucephala clangula/islandica
    # Count: 5
    Date:
    Observer: Catherine Hagen
    Location: Ruedi Reservoir (Pitkin County)
  24. Selasphorus sp. Selasphorus sp.
    # Count: 5
    Date:
    Observer: Tamas Zeke
    Location: Snowmass Village--Rim Trail
  25. new world flycatcher sp. Tyrannidae sp.
    # Count: 5
    Date:
    Observer: John Rice-Cameron
    Location: Roaring Fork River-12 mile stretch
  26. Aythya sp. Aythya sp.
    # Count: 4
    Date:
    Observer: Bryan Gieszl
    Location: Chapman Campground
  27. Buteo sp. Buteo sp.
    # Count: 4
    Date:
    Observer: John Anderson
    Location: Woody Creek Rd (Pitkin CR 18)--Upper River Rd to Canyon Mouth
  28. new world goldfinch sp. Spinus sp. (goldfinch sp.)
    # Count: 4
    Date:
    Observer: Jason Gregg
    Location: Aspen Center for Environmental Studies
  29. Spinus sp. Spinus sp.
    # Count: 4
    Date:
    Observer: Jake Shorty
    Location: Rio Grande Trail--Gerbaz Way Bridge to Snowmass
  30. new world warbler sp. Parulidae sp.
    # Count: 4
    Date:
    Observer: Rebecca Weiss
    Location: Buckskin Pass Trail, Crater Lake side
  31. teal sp. Anatidae sp. (teal sp.)
    # Count: 3
    Date:
    Observer: Charlotte Ward
    Location: Meadows Rd trails
  32. Greater/Lesser Scaup Aythya marila/affinis
    # Count: 3
    Date:
    Observer: Ernie Bradley
    Location: Placita River Bottoms CO
  33. Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalus
    # Count: 3
    Date:
    Observer: Jason Hedlund
    Location: Avalanche Campground
  34. hawk sp. Accipitridae sp. (hawk sp.)
    # Count: 3
    Date:
    Observer: george quittner
    Location: Marolt Open Space
  35. diurnal raptor sp. Accipitriformes/Falconiformes sp.
    # Count: 3
    Date:
    Observer: Catherine Hagen
    Location: County Road 6, Basalt, Colorado, US
  36. Empidonax sp. Empidonax sp.
    # Count: 3
    Date:
    Observer: Eliot VanOtteren
    Location: Ute Mesa, Aspen US-CO (39.1825,-106.8168)
  37. towhee sp. Melozone/Pipilo sp.
    # Count: 3
    Date:
    Observer: Julie Wille
    Location: 485 W Sopris Creek Rd, Basalt US-CO 39.34879, -107.06725
  38. Rose-breasted/Black-headed Grosbeak Pheucticus ludovicianus/melanocephalus
    # Count: 3
    Date:
    Observer: Dan Stone
    Location: little cloud trail
  39. goose sp. Anatidae (goose sp.)
    # Count: 2
    Date:
    Observer: Lisa Ayres
    Location: East Brush Creek Nature Trail and Ponds
  40. Horned/Eared Grebe Podiceps auritus/nigricollis
    # Count: 2
    Date:
    Observer: JoAnn Potter Riggle 🦤
    Location: Ruedi Inlet area
  41. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    # Count: 2
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  42. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    # Count: 2
    Date:
    Observer: Dan Jones
    Location: Ruedi Reservoir (Pitkin County)
  43. Yellow-bellied/Red-naped Sapsucker Sphyrapicus varius/nuchalis
    # Count: 2
    Date:
    Observer: Jon Webb
    Location: Avalanche Ranch
  44. sapsucker sp. Sphyrapicus sp.
    # Count: 2
    Date:
    Observer: Sameer Apte
    Location: Aspen Highlands
  45. large falcon sp. Falco sp. (large falcon sp.)
    # Count: 2
    Date:
    Observer: John Anderson
    Location: Rio Grande Trail--Jaffee Park to Gerbaz Way Bridge
  46. Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseri
    # Count: 2
    Date:
    Observer: Theo Bockhorst
    Location: Aspen Mountain
  47. Ruby-crowned/Golden-crowned Kinglet Corthylio calendula/Regulus satrapa
    # Count: 2
    Date:
    Observer: Chris Daniels
    Location: Green Mtn Trail - 82 to Cabins
  48. nuthatch sp. Sitta sp.
    # Count: 2
    Date:
    Observer: Bryan Gieszl
    Location: Snowmass Village--Rim Trail
  49. Catharus sp. Catharus sp.
    # Count: 2
    Date:
    Observer: Jake Glassman
    Location: Lower Hunter Creek Trail
  50. Spizella sp./American Tree Sparrow Spizella/Spizelloides sp.
    # Count: 2
    Date:
    Observer: Tamas Zeke
    Location: Snowmass Village--Ditch Trail
  51. Lazuli/Indigo Bunting Passerina amoena/cyanea
    # Count: 2
    Date:
    Observer: Bryan Gieszl
    Location: East Brush Creek Nature Trail and Ponds
  52. Snow/Ross's Goose Anser caerulescens/rossii
    # Count: 1
    Date:
    Observer: Bryan Gieszl
    Location: Ruedi Reservoir (Pitkin County)
  53. Ruby-throated/Black-chinned Hummingbird Archilochus colubris/alexandri
    # Count: 1
    Date:
    Observer: Tamas Zeke
    Location: Snowmass Village--Rim Trail
  54. Rufous/Allen's Hummingbird Selasphorus rufus/sasin
    # Count: 1
    Date:
    Observer: Barry Mink
    Location: Brush Creek Co
  55. peep sp. Calidris sp. (peep sp.)
    # Count: 1
    Date:
    Observer: Lisa Ayres
    Location: Marolt Open Space
  56. gull sp. Larinae sp.
    # Count: 1
    Date:
    Observer: Bryan Gieszl
    Location: 27637–27845 SH-82 W, Snowmass US-CO 39.31730, -106.94091
  57. Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperii
    # Count: 1
    Date:
    Observer: Catherine Hagen
    Location: Cozy Point Open Space, Aspen, Colorado, US (39.25, -106.885)
  58. Accipiter sp. Accipiter sp.
    # Count: 1
    Date:
    Observer: Rebecca Weiss
    Location: Moore Open Space
  59. Buteo/eagle sp. Buteo/eagle sp.
    # Count: 1
    Date:
    Observer: Sameer Apte
    Location: Aspen Highlands
  60. owl sp. Strigiformes sp.
    # Count: 1
    Date:
    Observer: Rebecca Weiss
    Location: Midway P Tr, above ponds on ridge
  61. small falcon sp. Falco sp. (small falcon sp.)
    # Count: 1
    Date:
    Observer: Dan Jones
    Location: Ruedi Reservoir (Pitkin County)
  62. falcon sp. Falco sp.
    # Count: 1
    Date:
    Observer: Phebe Meyers
    Location: White River National Forest, Aspen US-CO (39.1840,-106.8253)
  63. pewee sp. (Contopus sp.) Contopus sp.
    # Count: 1
    Date:
    Observer: Catherine Hagen
    Location: Northstar Preserve, East Aspen trail
  64. Cassin's/Plumbeous Vireo Vireo cassinii/plumbeus
    # Count: 1
    Date:
    Observer: Dan Stone
    Location: St. Benedict's Monastery
  65. vireo sp. Vireo sp.
    # Count: 1
    Date:
    Observer: Madalynn Connor
    Location: Prince Creek Road, Pitkin County, County Road 5, Carbondale, Colorado, US (39.356, -107.173)
  66. California/Woodhouse's Scrub-Jay Aphelocoma californica/woodhouseii
    # Count: 1
    Date:
    Observer: Barry Mink
    Location: Aspen
  67. raven sp. Corvus sp. (raven sp.)
    # Count: 1
    Date:
    Observer: Barry Mink
    Location: Aspen
  68. Pacific/Winter Wren Troglodytes pacificus/hiemalis
    # Count: 1
    Date:
    Observer: Steven Mlodinow
    Location: Snowmass
  69. wren sp. Troglodytidae sp.
    # Count: 1
    Date:
    Observer: Carolyn Corl
    Location: Redstone (town)
  70. Red/Cassia Crossbill Loxia curvirostra/sinesciuris
    # Count: 1
    Date:
    Observer: Dick Filby
    Location: Chapman Campground
  71. grackle sp. Quiscalus sp.
    # Count: 1
    Date:
    Observer: Jason Gregg
    Location: Meadowood meadow
  72. Setophaga sp. Setophaga sp.
    # Count: 1
    Date:
    Observer: Sameer Apte
    Location: Capitol Creek Rd (Pitkin CR 9)--Monastery Rd to Snowmass Creek Rd
  73. bird sp. Aves sp.
    # Count: 1
    Date:
    Observer: Jake Glassman
    Location: Prince Creek Rd, Basalt US-CO (39.3363,-107.1548)
  74. Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/traillii
    # Count: X
    Date:
    Observer: Justin Leahy
    Location: Redstone (town)