Illustrated Checklist

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Native and Naturalized (227)

  1. Last observed by michael perrone on 25 Mar 2024
  2. Last observed by Samuel Schmidt on 8 Jan 2024
  3. Last observed by Jim Thomas on 15 Mar 2024
  4. Last observed by Bob Ellis on 28 Apr 2024
  5. Last observed by Jim Thomas on 29 Jan 2024
  6. Last observed by Jim Thomas on 28 Aug 2023
  7. Last observed by Jeri Langham on 23 Oct 2023
  8. Last observed by Forest Chapman on 10 Apr 2024
  9. Last observed by Forest Chapman on 10 Apr 2024
  10. Last observed by Forest Chapman on 10 Apr 2024
  11. Last observed by Konshau Duman on 15 Mar 2022
  12. Last observed by Mark Martucci on 20 Feb 2024
  13. Last observed by Forest Chapman on 10 Apr 2024
  14. Last observed by Leo Grossinger on 5 Mar 2024
  15. Last observed by Forest Chapman on 10 Apr 2024
  16. Last observed by Judith Allen on 20 Feb 2023
  17. Last observed by Jim Thomas on 22 Jun 2023
  18. Last observed by Melissa Marshall on 25 Jan 2024
  19. Last observed by Bart Wickel on 21 Dec 2019
  20. Last observed by Jeri Langham on 30 Oct 2023
  21. Last observed by Mark Martucci on 20 Feb 2024
  22. Last observed by Lily Douglas on 26 Dec 2022
  23. Last observed by Jim Thomas on 15 Mar 2024
  24. Last observed by Yolo Basin Foundation on 7 Jan 2024
  25. Last observed by Forest Chapman on 10 Apr 2024
  26. Last observed by Jim Thomas on 15 Feb 2016
  27. Last observed by Richard Hall on 13 Feb 2005
  28. Last observed by Jim Thomas on 6 Feb 2023
  29. Last observed by Jeri Langham on 21 Jun 2019
  30. Last observed by Joshua Greenfield on 11 Dec 2023
  31. Last observed by Joshua Greenfield on 11 Dec 2023
  32. Last observed by Bob Ellis on 28 Apr 2024
  33. Last observed by Richard Hall on 9 May 2004
  34. Last observed by michael perrone on 25 Mar 2024
  35. Last observed by Bart Wickel on 6 Apr 2021
  36. Last observed by Daniel Polin on 1 Apr 2024
  37. Last observed by Forest Chapman on 10 Apr 2024
  38. Last observed by Forest Chapman on 10 Apr 2024
  39. Last observed by Forest Chapman on 10 Apr 2024
  40. Last observed by Jim Thomas on 15 Jan 2024
  41. Last observed by Forest Chapman on 10 Apr 2024
  42. Last observed by Jean Broadhvest on 24 Oct 1999
  43. Last observed by Bob Ellis on 28 Apr 2024
  44. Last observed by Helen Kochenderfer on 26 Aug 2011
  45. Last observed by Richard Hall on 15 Jul 2004
  46. Last observed by Tom Pritchard on 5 Jul 2023
  47. Last observed by Mark Martucci on 6 Jan 2024
  48. Last observed by Mark Martucci on 8 Dec 2023
  49. Last observed by Melissa Marshall on 25 Jan 2024
  50. Last observed by Joshua Greenfield on 30 Jul 2023
  51. Last observed by Konshau Duman on 18 May 2020
  52. Last observed by Mark Sawyer on 19 Aug 2016
  53. Last observed by Forest Chapman on 10 Apr 2024
  54. Last observed by michael perrone on 25 Jul 2023
  55. Last observed by Roger Adamson on 22 Jul 2002
  56. Last observed by John Robinson on 29 Jun 2015
  57. Last observed by Carbon Free on 2 Aug 2008
  58. Last observed by Steve Hampton on 11 Sep 2009
  59. Last observed by Mark Martucci on 14 Jan 2024
  60. Last observed by Peter Colasanti on 24 Aug 2011
  61. Last observed by Jennifer Rycenga on 17 Jul 2011
  62. Last observed by Mark Martucci on 14 Jan 2024
  63. Last observed by Frank Fabbro on 16 Oct 2023
  64. Last observed by Mark Martucci on 30 Nov 2023
  65. Last observed by Chris Conard on 12 Mar 1999
  66. Last observed by Frances Oliver on 22 Sep 2002
  67. Last observed by Steve Hampton on 8 Sep 2007
  68. Last observed by Jim Thomas on 29 Jan 2024
  69. Last observed by Mark Martucci on 14 Jan 2024
  70. Last observed by Mark Martucci on 15 Mar 2014
  71. Last observed by Steve Hampton on 29 Dec 2012
  72. Last observed by Mark Martucci on 20 Feb 2024
  73. Last observed by Mark Martucci on 30 Nov 2023
  74. Last observed by Mark Martucci on 30 Nov 2023
  75. Last observed by Frances Oliver on 24 Jun 2005
  76. Last observed by Joshua Greenfield on 20 Jul 2023
  77. Last observed by Jim Thomas on 7 Sep 2022
  78. Last observed by Jeri Langham on 23 Oct 2023
  79. Last observed by Bob Dunn on 21 Aug 2011
  80. Last observed by Steve Hampton on 25 Aug 2012
  81. Last observed by michael perrone on 25 Mar 2024
  82. Last observed by Joshua Greenfield on 11 Dec 2023
  83. Last observed by Forest Chapman on 10 Apr 2024
  84. Last observed by Lyann Comrack on 3 Aug 2023
  85. Last observed by Joshua Greenfield on 30 Jul 2023
  86. Last observed by Bob Ellis on 28 Apr 2024
  87. Last observed by michael perrone on 25 Mar 2024
  88. Last observed by Tom Pritchard on 10 Jul 2023
  89. Last observed by Forest Chapman on 10 Apr 2024
  90. Last observed by michael perrone on 25 Mar 2024
  91. Last observed by Ken Ferguson on 26 Aug 2023
  92. Last observed by Mark Martucci on 14 Jan 2024
  93. Last observed by David Phillips on 10 Apr 2004
  94. Last observed by Daniel Polin on 1 Apr 2024
  95. Last observed by Joshua Greenfield on 8 Jan 2024
  96. Last observed by Melissa Marshall on 25 Jan 2024
  97. Last observed by Joshua Greenfield on 11 Dec 2023
  98. Last observed by Melissa Marshall on 25 Jan 2024
  99. Last observed by Forest Chapman on 10 Apr 2024
  100. Last observed by Daniel Polin on 1 Apr 2024
  101. Last observed by Carbon Free on 16 Feb 2008
  102. Last observed by Bart Wickel on 21 Dec 2019
  103. Last observed by Jim Thomas on 10 Aug 2022
  104. Last observed by Joshua Greenfield on 8 Jan 2024
  105. Last observed by Lily Douglas on 23 Dec 2023
  106. Last observed by Jeri Langham on 16 May 2018
  107. Last observed by Carbon Free on 16 Feb 2008
  108. Last observed by michael perrone on 25 Mar 2024
  109. Last observed by Frances Oliver on 5 Feb 2003
  110. Last observed by Forest Chapman on 10 Apr 2024
  111. Last observed by Forest Chapman on 10 Apr 2024
  112. Last observed by Josh Ackerman on 27 Aug 2016
  113. Last observed by Melissa Marshall on 25 Jan 2024
  114. Last observed by Cameron Huynh on 17 Mar 2024
  115. Last observed by Robert Floerke on 6 Nov 2023
  116. Last observed by Daniel Polin on 1 Apr 2024
  117. Last observed by Jim Thomas on 1 Jan 2018
  118. Last observed by Zane Pickus on 29 Sep 2022
  119. Last observed by Forest Chapman on 10 Apr 2024
  120. Last observed by Melissa Marshall on 25 Jan 2024
  121. Last observed by Forest Chapman on 10 Apr 2024
  122. Last observed by Dorian Anderson on 14 Jun 2023
  123. Last observed by Jim Gain on 22 Feb 2004
  124. Last observed by Yolo Basin Foundation on 4 Dec 2023
  125. Last observed by Camille Hill on 31 May 2021
  126. Last observed by Cameron Huynh on 17 Mar 2024
  127. Last observed by Forest Chapman on 10 Apr 2024
  128. Last observed by Melanie LaCava on 26 Jun 2022
  129. Last observed by Joshua Greenfield on 11 Dec 2023
  130. Last observed by Yolo Basin Foundation on 3 Sep 2023
  131. Last observed by Forest Chapman on 10 Apr 2024
  132. Last observed by Kirk Swenson on 2 Aug 2016
  133. Last observed by Cameron Huynh on 17 Mar 2024
  134. Last observed by michael perrone on 25 Mar 2024
  135. Last observed by Dania Lukey on 6 Jul 2022
  136. Last observed by Forest Chapman on 10 Apr 2024
  137. Last observed by Carbon Free on 7 Mar 2008
  138. Last observed by Joshua Greenfield on 8 Jan 2024
  139. Last observed by Bob Ellis on 28 Apr 2024
  140. Last observed by Forest Chapman on 10 Apr 2024
  141. Last observed by Melissa Marshall on 25 Jan 2024
  142. Last observed by Forest Chapman on 10 Apr 2024
  143. Last observed by Forest Chapman on 10 Apr 2024
  144. Last observed by Jean Broadhvest on 1 Jan 1999
  145. Last observed by Jim Thomas on 23 May 2015
  146. Last observed by Joshua Greenfield on 20 Feb 2023
  147. Last observed by Dan Williams on 21 Jul 2022
  148. Last observed by Judy Meade on 22 Feb 2020
  149. Last observed by Leo Grossinger on 5 Mar 2024
  150. Last observed by Forest Chapman on 10 Apr 2024
  151. Last observed by Forest Chapman on 10 Apr 2024
  152. Last observed by Forest Chapman on 10 Apr 2024
  153. Last observed by Forest Chapman on 10 Apr 2024
  154. Last observed by Carbon Free on 24 Aug 2008
  155. Last observed by Jim Thomas on 25 Sep 2017
  156. Last observed by Jim Thomas on 10 Apr 2023
  157. Last observed by Joshua Greenfield on 8 Jan 2024
  158. Last observed by Jim Thomas on 4 Dec 2023
  159. Last observed by Forest Chapman on 10 Apr 2024
  160. Last observed by michael perrone on 25 Mar 2024
  161. Last observed by Joshua Greenfield on 13 Feb 2023
  162. Last observed by Forest Chapman on 10 Apr 2024
  163. Last observed by Phil Dunn on 1 May 2005
  164. Last observed by michael perrone on 25 Jul 2023
  165. Last observed by Forest Chapman on 10 Apr 2024
  166. Last observed by Charlotte Pavelka & Doug Reitz on 21 Sep 2020
  167. Last observed by Forest Chapman on 10 Apr 2024
  168. Last observed by Jake Glassman on 25 Sep 2023
  169. Last observed by Forest Chapman on 10 Apr 2024
  170. Last observed by William Wiskes on 12 May 2019
  171. Last observed by Jeri Langham on 7 Jun 2023
  172. Last observed by michael perrone on 25 Jul 2023
  173. Last observed by Jim Thomas on 7 Aug 2023
  174. Last observed by Jim Thomas on 31 Jul 2023

Exotic: Provisional (1)

  1. Last observed by Jim Thomas on 23 May 2022

Exotic: Escapee (2)

  1. Last observed by Jim Thomas on 26 Jun 2021

Hybrids (3)

  1. Gadwall x Mallard (hybrid) Mareca strepera x Anas platyrhynchos
    Last observed by Jim Thomas on 4 Nov 2019
  2. Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreus
    Last observed by William Rockey on 13 Feb 2012
  3. Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescens
    Last observed by Konshau Duman on 15 Mar 2022

Additional Taxa (23)

  1. Snow/Ross's Goose Anser caerulescens/rossii
    Last observed by Cameron Tescher on 7 Feb 2022
  2. goose sp. Anatidae (goose sp.)
    Last observed by Michael Long on 8 Jan 2024
  3. teal sp. Anatidae sp. (teal sp.)
    Last observed by Charlotte Pavelka & Doug Reitz on 21 Sep 2020
  4. dabbling duck sp. Anatidae sp. (dabbling duck sp.)
    Last observed by Curtis Marantz on 22 Aug 2011
  5. Greater/Lesser Scaup Aythya marila/affinis
    Last observed by Yolo Basin Foundation on 5 Feb 2022
  6. duck sp. Anatidae (duck sp.)
    Last observed by michael perrone on 25 Jul 2023
  7. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    Last observed by Jim Thomas on 10 Sep 2018
  8. hummingbird sp. Trochilidae sp.
    Last observed by Kari Warner on 4 Aug 2021
  9. curlew sp. Numenius sp.
    Last observed by Sacha Heath on 31 Dec 2012
  10. Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceus
    Last observed by Jasen Liu on 4 Jul 2023
  11. phalarope sp. Phalaropus sp.
    Last observed by Frank Fogarty on 20 Jul 2016
  12. peep sp. Calidris sp. (peep sp.)
    Last observed by Jim Thomas on 15 Mar 2024
  13. shorebird sp. Charadriiformes sp.
    Last observed by Mark Stephenson on 2 May 2020
  14. Larus sp. Larus sp.
    Last observed by Jim Thomas on 15 Mar 2024
  15. gull sp. Larinae sp.
    Last observed by Mark Martucci on 8 Dec 2023
  16. Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperii
    Last observed by Jim Thomas on 13 Mar 2020
  17. Accipiter sp. Accipiter sp.
    Last observed by Lori Miyasato on 5 Jul 2021
  18. falcon sp. Falco sp.
    Last observed by Yolo Basin Foundation on 5 Jul 2014
  19. Empidonax sp. Empidonax sp.
    Last observed by Jim Thomas on 24 Sep 2018
  20. swallow sp. Hirundinidae sp.
    Last observed by Jeri Langham on 23 Oct 2023
  21. Zonotrichia sp. Zonotrichia sp.
    Last observed by Frank Fogarty on 5 Dec 2016
  22. blackbird sp. Icteridae sp.
    Last observed by Samuel Schmidt on 8 Jan 2024
  23. passerine sp. Passeriformes sp.
    Last observed by Yolo Basin Foundation on 2 Oct 2021