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Illustrated Checklist

 Powered by Macaulay Library and eBird
Updated ~33 seconds ago

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236 Species Observed
Species w/ Photos
Species w/ Audio
Species Needing Photos
Species Needing Audio
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Native and Naturalized (235)

  1. Last observed by Coen Dexter on 9 Nov 2023
  2. Last observed by Curtis Higgins on 27 Jan 2022
  3. Last observed by Mike Thompson on 20 Feb 2022
  4. Last observed by Glenn Dunmire on 24 Jan 2022
  5. Last observed by Mike Thompson on 27 Apr 2024
  6. Last observed by Mike Thompson on 7 Mar 2023
  7. Last observed by Riley Morris on 24 Oct 2015
  8. Last observed by Coen Dexter on 15 Oct 2023
  9. Last observed by Coen Dexter on 25 Apr 2024
  10. Last observed by Steve Heath on 14 Apr 2024
  11. Last observed by Coen Dexter on 23 Apr 2024
  12. Last observed by Coen Dexter on 13 Apr 2024
  13. Last observed by Mike Thompson on 27 Apr 2024
  14. Last observed by Coen Dexter on 24 Aug 2023
  15. Last observed by Coen Dexter on 19 Mar 2024
  16. Last observed by Steve Heath on 14 Apr 2024
  17. Last observed by Coen Dexter on 30 Dec 2023
  18. Last observed by Mike Thompson on 28 Mar 2024
  19. Last observed by Mike Thompson on 12 Apr 2024
  20. Last observed by Coen Dexter on 19 Mar 2022
  21. Last observed by Coen Dexter on 25 Apr 2024
  22. Last observed by Susan Allerton on 8 Nov 2020
  23. Last observed by Glenn Dunmire on 26 Oct 2020
  24. Last observed by Glenn Dunmire on 26 Oct 2020
  25. Last observed by Coen Dexter on 25 Apr 2024
  26. Last observed by Coen Dexter on 13 Apr 2024
  27. Last observed by Coen Dexter on 10 Mar 2024
  28. Last observed by Steve Heath on 1 Apr 2024
  29. Last observed by Mike Thompson on 12 Apr 2024
  30. Last observed by Coen Dexter on 13 Apr 2024
  31. Last observed by Coen Dexter on 23 Apr 2024
  32. Last observed by David Chartier on 19 May 2013
  33. Last observed by David Chartier on 26 Oct 2011
  34. Last observed by Mike Thompson on 12 Apr 2024
  35. Last observed by David Suddjian on 24 Apr 2024
  36. Last observed by Erik Hendrickson on 16 Sep 2018
  37. Last observed by Mike Thompson on 27 Apr 2024
  38. Last observed by Mike Thompson on 27 Apr 2024
  39. Last observed by Mike Thompson on 27 Apr 2024
  40. Last observed by Mike Thompson on 28 Mar 2024
  41. Last observed by Bob Perata on 6 May 2010
  42. Last observed by Mike Thompson on 12 Apr 2024
  43. Last observed by Mike Thompson on 20 Feb 2022
  44. Last observed by Mike Thompson on 10 Apr 2024
  45. Last observed by Coen Dexter on 31 May 2022
  46. Last observed by Coen Dexter on 24 Aug 2023
  47. Last observed by James Beatty on 9 May 2012
  48. Last observed by Glenn Dunmire on 24 May 2021
  49. Last observed by Brenda Wright on 23 May 2021
  50. Last observed by Coen Dexter on 7 Jun 2023
  51. Last observed by Coen Dexter on 14 Sep 2023
  52. Last observed by Coen Dexter on 8 Sep 2022
  53. Last observed by Coen Dexter on 15 Aug 2023
  54. Last observed by Mike Thompson on 10 Apr 2024
  55. Last observed by Mike Thompson on 10 Apr 2024
  56. Last observed by Colorado Bird Records Committee on 1 Jul 1992
  57. Last observed by Mike Thompson on 27 Apr 2024
  58. Last observed by Coen Dexter on 19 Mar 2024
  59. Last observed by Mike Thompson on 25 May 2023
  60. Last observed by Mike Thompson on 12 Apr 2024
  61. Last observed by Coen Dexter on 23 Apr 2024
  62. Last observed by Coen Dexter on 22 Apr 2023
  63. Last observed by Coen Dexter on 31 Aug 2022
  64. Last observed by Norman Erthal on 6 May 2022
  65. Last observed by Coen Dexter on 23 Sep 2023
  66. Last observed by Mike Thompson on 10 Apr 2024
  67. Last observed by Coen Dexter on 24 Aug 2023
  68. Last observed by James Beatty on 1 Oct 2022
  69. Last observed by Coen Dexter on 25 Apr 2024
  70. Last observed by Coen Dexter on 15 Aug 2023
  71. Last observed by Coen Dexter on 14 Sep 2023
  72. Last observed by Coen Dexter on 27 Jun 2023
  73. Last observed by Coen Dexter on 18 Oct 2023
  74. Last observed by Glenn Dunmire on 4 Oct 2021
  75. Last observed by Tyler Lausten on 16 Apr 2023
  76. Last observed by Coen Dexter on 29 Aug 2022
  77. Last observed by James Beatty on 3 Jun 2022
  78. Last observed by Mike Thompson on 27 Apr 2024
  79. Last observed by Coen Dexter on 16 Oct 2021
  80. Last observed by Stephen Tarnowski on 27 Aug 2022
  81. Last observed by Coen Dexter on 11 Oct 2021
  82. Last observed by Colorado Bird Records Committee on 21 Mar 1978
  83. Last observed by Brenda Wright on 29 Aug 2021
  84. Last observed by Coen Dexter on 25 Apr 2024
  85. Last observed by Jason St. Pierre on 13 Apr 2024
  86. Last observed by Coen Dexter on 25 Apr 2024
  87. Last observed by Jason St. Pierre on 2 Apr 2023
  88. Last observed by Stephen Tarnowski on 6 Apr 2022
  89. Last observed by Coen Dexter on 8 Apr 2023
  90. Last observed by Coen Dexter on 7 Jun 2023
  91. Last observed by Stephen Tarnowski on 22 May 2022
  92. Last observed by Coen Dexter on 25 Apr 2024
  93. Last observed by Coen Dexter on 3 Oct 2022
  94. Last observed by Mike Thompson on 27 Apr 2024
  95. Last observed by Coen Dexter on 25 Apr 2024
  96. Last observed by Coen Dexter on 13 Apr 2024
  97. Last observed by Kelly Aldridge on 4 Jun 2022
  98. Last observed by Riley Morris on 25 Apr 2009
  99. Last observed by Coen Dexter on 24 Aug 2023
  100. Last observed by Coen Dexter on 23 Sep 2023
  101. Last observed by Coen Dexter on 2 Oct 2023
  102. Last observed by Josh Lefever on 28 May 2021
  103. Last observed by Mike Thompson on 25 May 2023
  104. Last observed by Mike Thompson on 27 Apr 2024
  105. Last observed by Coen Dexter on 25 Apr 2024
  106. Last observed by Coen Dexter on 25 Apr 2024
  107. Last observed by Coen Dexter on 25 Apr 2024
  108. Last observed by Coen Dexter on 27 Mar 2024
  109. Last observed by Coen Dexter on 11 Feb 2024
  110. Last observed by Mike Thompson on 10 Apr 2024
  111. Last observed by Coen Dexter on 11 Feb 2024
  112. Last observed by Steven Mlodinow on 15 Apr 2014
  113. Last observed by Mike Thompson on 27 Apr 2024
  114. Last observed by Coen Dexter on 3 Oct 2023
  115. Last observed by Brenda Wright on 11 Aug 2020
  116. Last observed by Mike Thompson on 27 Apr 2024
  117. Last observed by James Beatty on 10 Feb 2002
  118. Last observed by Coen Dexter on 11 Feb 2024
  119. Last observed by David Chartier on 19 May 2013
  120. Last observed by Mike Thompson on 10 Apr 2024
  121. Last observed by Mike Thompson on 10 Apr 2024
  122. Last observed by James Beatty on 8 May 2013
  123. Last observed by Nicholas Koebley on 2 Nov 2020
  124. Last observed by Brenda Wright on 11 Jul 2023
  125. Last observed by Coen Dexter on 2 Oct 2023
  126. Last observed by Mike Thompson on 10 Apr 2024
  127. Last observed by Coen Dexter on 4 Jan 2024
  128. Last observed by Mike Thompson on 2 Dec 2023
  129. Last observed by Coen Dexter on 24 Aug 2023
  130. Last observed by Mike Thompson on 2 Dec 2023
  131. Last observed by James Beatty on 5 Aug 2004
  132. Last observed by Brenda Wright on 9 Aug 2023
  133. Last observed by Brenda Wright on 26 May 2023
  134. Last observed by James Beatty on 27 Aug 2003
  135. Last observed by Brenda Wright on 23 May 2021
  136. Last observed by Coen Dexter on 25 Sep 2022
  137. Last observed by James Beatty on 5 Aug 2004
  138. Last observed by Mike Thompson on 28 Mar 2024
  139. Last observed by Mike Thompson on 27 Apr 2024
  140. Last observed by Jason St. Pierre on 31 Jul 2023
  141. Last observed by Steve Larson on 23 Jul 2017
  142. Last observed by Mike Thompson on 27 Apr 2024
  143. Last observed by Brenda Wright on 19 Jun 2021
  144. Last observed by Coen Dexter on 29 Aug 2022
  145. Last observed by Coen Dexter on 10 Oct 2022
  146. Last observed by Coen Dexter on 29 Jul 2023
  147. Last observed by Brenda Wright on 7 Dec 2023
  148. Last observed by James Beatty on 8 May 2013
  149. Last observed by Coen Dexter on 30 Dec 2023
  150. Last observed by Mike Thompson on 27 Apr 2024
  151. Last observed by Erik Hendrickson on 31 Aug 2018
  152. Last observed by Steve Heath on 1 Apr 2024
  153. Last observed by Coen Dexter on 25 Apr 2024
  154. Last observed by Coen Dexter on 10 Oct 2022
  155. Last observed by Mike Thompson on 29 Oct 2023
  156. Last observed by Mike Thompson on 10 Apr 2024
  157. Last observed by Coen Dexter on 19 Mar 2024
  158. Last observed by Mike Thompson on 27 Apr 2024
  159. Last observed by Mike Thompson on 27 Apr 2024
  160. Last observed by Mike Thompson on 27 Apr 2024
  161. Last observed by Stephen Tarnowski on 4 Sep 2023
  162. Last observed by Mike Thompson on 27 Apr 2024
  163. Last observed by Mike Thompson on 27 Apr 2024
  164. Last observed by Mike Thompson on 27 Apr 2024
  165. Last observed by Coen Dexter on 27 Mar 2024
  166. Last observed by Coen Dexter on 30 Dec 2023
  167. Last observed by Mike Thompson on 13 Dec 2023
  168. Last observed by Nicholas Koebley on 2 Nov 2020
  169. Last observed by Brenda Wright on 18 Mar 2021
  170. Last observed by Mike Thompson on 27 Apr 2024
  171. Last observed by Coen Dexter on 23 Sep 2023
  172. Last observed by James Beatty on 28 Apr 2007
  173. Last observed by Coen Dexter on 15 Oct 2023
  174. Last observed by Mike Thompson on 10 Apr 2024
  175. Last observed by Mike Thompson on 10 Apr 2024
  176. Last observed by Bob Perata on 6 May 2010
  177. Last observed by Mike Thompson on 28 Mar 2024
  178. Last observed by Brenda Wright on 5 Jun 2023
  179. Last observed by Coen Dexter on 11 Oct 2023
  180. Last observed by Brenda Wright on 11 Jul 2023
  181. Last observed by Steve Heath on 1 Apr 2024
  182. Last observed by Coen Dexter on 1 Apr 2024
  183. Last observed by Coen Dexter on 19 Mar 2024
  184. Last observed by Brenda Wright on 11 Nov 2020
  185. Last observed by Mike Thompson on 12 Apr 2024
  186. Last observed by Coen Dexter on 31 Dec 2022
  187. Last observed by Mike Thompson on 28 Mar 2024
  188. Last observed by Coen Dexter on 27 Mar 2024
  189. Last observed by Mike Thompson on 17 Mar 2024
  190. Last observed by Mike Thompson on 12 Apr 2024
  191. Last observed by Mike Thompson on 2 Mar 2023
  192. Last observed by James Beatty on 18 Apr 2006
  193. Last observed by Mike Thompson on 9 Nov 2023
  194. Last observed by Coen Dexter on 30 Dec 2023
  195. Last observed by Coen Dexter on 30 Dec 2023
  196. Last observed by Colorado Bird Records Committee on 13 Sep 2003
  197. Last observed by Mike Thompson on 27 Apr 2024
  198. Last observed by Mike Thompson on 27 Apr 2024
  199. Last observed by David Chartier on 19 May 2013
  200. Last observed by Mike Thompson on 2 Sep 2023
  201. Last observed by Coen Dexter on 31 Dec 2022
  202. Last observed by Mike Thompson on 12 Apr 2024
  203. Last observed by Coen Dexter on 25 Apr 2024
  204. Last observed by Coen Dexter on 4 Nov 2020
  205. Last observed by Mike Thompson on 27 Apr 2024
  206. Last observed by Jason St. Pierre on 13 Apr 2024
  207. Last observed by Mike Thompson on 10 Apr 2024
  208. Last observed by Mike Thompson on 9 Nov 2023
  209. Last observed by Mike Thompson on 12 Apr 2024
  210. Last observed by Mike Thompson on 17 Mar 2024
  211. Last observed by Eric Moore on 18 May 2023
  212. Last observed by Mike Thompson on 27 Apr 2024
  213. Last observed by Mike Thompson on 27 Apr 2024
  214. Last observed by Brenda Wright on 9 Aug 2023
  215. Last observed by Larry Bennett on 12 Jun 2022
  216. Last observed by Mike Thompson on 27 Apr 2024
  217. Last observed by Jason St. Pierre on 31 Jul 2023
  218. Last observed by Coen Dexter on 25 Apr 2024
  219. Last observed by Emily Davenport on 12 May 2018
  220. Last observed by Ben Sampson on 4 Aug 2023
  221. Last observed by Coen Dexter on 15 Oct 2023
  222. Last observed by Brenda Wright on 7 Sep 2021
  223. Last observed by Jason St. Pierre on 20 Sep 2023
  224. Last observed by Brenda Wright on 7 Sep 2021
  225. Last observed by Coen Dexter on 23 Sep 2023
  226. Last observed by Glenn Dunmire on 8 May 2023
  227. Last observed by Mike Thompson on 27 Apr 2024
  228. Last observed by James Beatty on 16 Aug 2002
  229. Last observed by Coen Dexter on 3 Oct 2022
  230. Last observed by Coen Dexter on 10 Oct 2022
  231. Last observed by Coen Dexter on 3 Oct 2023
  232. Last observed by Jason St. Pierre on 8 May 2023
  233. Last observed by Jason St. Pierre on 8 May 2023
  234. Last observed by Brenda Wright on 9 Aug 2023
  235. Last observed by Coen Dexter on 8 Sep 2022

Exotic: Provisional (1)

  1. Last observed by Brenda Wright on 17 May 2022

Exotic: Escapee (1)

  1. Last observed by Erik Hendrickson on 24 Sep 2018

Hybrids (2)

  1. Cinnamon Teal x Northern Shoveler (hybrid) Spatula cyanoptera x clypeata
    Last observed by Coen Dexter on 16 Apr 2022
  2. Mallard x Mexican Duck (hybrid) Anas platyrhynchos x diazi
    Last observed by Mike Thompson on 2 Mar 2023

Additional Taxa (42)

  1. Cackling/Canada Goose Branta hutchinsii/canadensis
    Last observed by Mike Thompson on 10 Dec 2023
  2. Blue-winged/Cinnamon Teal Spatula discors/cyanoptera
    Last observed by Coen Dexter on 2 Oct 2022
  3. Mallard/Mexican Duck Anas platyrhynchos/diazi
    Last observed by Mike Thompson on 25 May 2023
  4. teal sp. Anatidae sp. (teal sp.)
    Last observed by Coen Dexter on 29 Dec 2022
  5. dabbling duck sp. Anatidae sp. (dabbling duck sp.)
    Last observed by Stephen Tarnowski on 4 Sep 2023
  6. Greater/Lesser Scaup Aythya marila/affinis
    Last observed by Coen Dexter on 1 Feb 2022
  7. Aythya sp. Aythya sp.
    Last observed by Jason St. Pierre on 26 Oct 2022
  8. Common/Barrow's Goldeneye Bucephala clangula/islandica
    Last observed by Mike Thompson on 27 Feb 2022
  9. duck sp. Anatidae (duck sp.)
    Last observed by Mike Thompson on 27 Apr 2024
  10. Horned/Eared Grebe Podiceps auritus/nigricollis
    Last observed by Candice Johnson on 12 Apr 2018
  11. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    Last observed by Mike Thompson on 29 Oct 2023
  12. grebe sp. Podicipedidae sp.
    Last observed by Mark Amershek on 17 May 2023
  13. nighthawk sp. Chordeiles sp.
    Last observed by Coen Dexter on 6 Jun 2023
  14. hummingbird sp. Trochilidae sp.
    Last observed by Coen Dexter on 19 Jul 2023
  15. Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceus
    Last observed by Susan Allerton on 24 Apr 2018
  16. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    Last observed by Glenn Dunmire on 26 Aug 2022
  17. Western/Semipalmated Sandpiper Calidris mauri/pusilla
    Last observed by Coen Dexter on 8 Aug 2022
  18. peep sp. Calidris sp. (peep sp.)
    Last observed by Stephen Tarnowski on 27 Aug 2022
  19. large shorebird sp. Scolopacidae sp. (large shorebird sp.)
    Last observed by Coen Dexter on 5 Oct 2021
  20. shorebird sp. Charadriiformes sp.
    Last observed by Cameron Carver on 20 May 2022
  21. Larus sp. Larus sp.
    Last observed by Melissa May on 8 Apr 2023
  22. gull sp. Larinae sp.
    Last observed by Mike Thompson on 18 Dec 2023
  23. Forster's/Common Tern Sterna forsteri/hirundo
    Last observed by Coen Dexter on 23 May 2022
  24. Sterna sp. Sterna sp.
    Last observed by Erik Hendrickson on 4 Oct 2017
  25. tern sp. Sterninae sp.
    Last observed by Coen Dexter on 18 May 2022
  26. loon sp. Gavia sp.
    Last observed by Coen Dexter on 3 Nov 2021
  27. Double-crested/Neotropic Cormorant Nannopterum auritum/brasilianum
    Last observed by Stephen Tarnowski on 4 Sep 2023
  28. Glossy/White-faced Ibis Plegadis falcinellus/chihi
    Last observed by Jason St. Pierre on 5 May 2022
  29. Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperii
    Last observed by Mike Thompson on 28 Mar 2024
  30. Buteo sp. Buteo sp.
    Last observed by Mike Thompson on 10 Dec 2023
  31. hawk sp. Accipitridae sp. (hawk sp.)
    Last observed by James Beatty on 17 Oct 2021
  32. woodpecker sp. Picidae sp.
    Last observed by Erik Hendrickson on 24 Sep 2018
  33. Empidonax sp. Empidonax sp.
    Last observed by Stephen Tarnowski on 12 Aug 2021
  34. new world flycatcher sp. Tyrannidae sp.
    Last observed by Alison Sample on 6 Oct 2017
  35. swallow sp. Hirundinidae sp.
    Last observed by Stephen Tarnowski on 4 Sep 2023
  36. wren sp. Troglodytidae sp.
    Last observed by Brenda Wright on 24 Dec 2020
  37. bluebird sp. Sialia sp.
    Last observed by Ryan Votta on 8 Sep 2018
  38. rosy-finch sp. Leucosticte sp.
    Last observed by Jason St. Pierre on 21 Nov 2015
  39. Spizella sp. Spizella sp.
    Last observed by James Beatty on 15 Sep 2018
  40. new world sparrow sp. Passerellidae sp.
    Last observed by Stephen Tarnowski on 19 Apr 2022
  41. blackbird sp. Icteridae sp.
    Last observed by Stephen Tarnowski on 3 Jun 2022
  42. passerine sp. Passeriformes sp.
    Last observed by Mike Thompson on 17 Mar 2024