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Walden Reservoir

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Illustrated Checklist

 Powered by Macaulay Library and eBird
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194 Species Observed
Species w/ Photos
Species w/ Audio
Species Needing Photos
Species Needing Audio
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Native and Naturalized (194)

  1. Last observed by Steve Borgwald on 22 Apr 2024
  2. Last observed by Steven Mlodinow on 28 Apr 2018
  3. Last observed by Steven Mlodinow on 28 Apr 2018
  4. Last observed by Brendan Fogarty on 11 Apr 2022
  5. Last observed by Cole Wild on 23 Jul 2024
  6. Last observed by Daniel Maynard on 29 Nov 2012
  7. Last observed by Steven Mlodinow on 23 Jun 2020
  8. Last observed by Cole Wild on 23 Jul 2024
  9. Last observed by Cole Wild on 23 Jul 2024
  10. Last observed by Cole Wild on 23 Jul 2024
  11. Last observed by Cole Wild on 23 Jul 2024
  12. Last observed by Cole Wild on 23 Jul 2024
  13. Last observed by Cole Wild on 23 Jul 2024
  14. Last observed by Steven Mlodinow on 11 Jul 2020
  15. Last observed by M Gaylord on 23 Apr 2024
  16. Last observed by Cole Wild on 23 Jul 2024
  17. Last observed by Cole Wild on 23 Jul 2024
  18. Last observed by Cole Wild on 23 Jul 2024
  19. Last observed by Cole Wild on 23 Jul 2024
  20. Last observed by Luke Pheneger on 19 Apr 2024
  21. Last observed by Cole Wild on 23 Jul 2024
  22. Last observed by Forrest Luke on 6 Nov 2022
  23. Last observed by Cole Wild on 23 Jul 2024
  24. Last observed by Luke Pheneger on 19 Apr 2024
  25. Last observed by Doug Kibbe on 5 Nov 2018
  26. Last observed by Joey Kellner on 19 Nov 2023
  27. Last observed by michael kiessig on 24 Jun 2024
  28. Last observed by Luke Pheneger on 19 Apr 2024
  29. Last observed by Cole Wild on 23 Jul 2024
  30. Last observed by Angelo DelloMargio on 15 Jun 2024
  31. Last observed by Russ Costello on 23 Apr 2011
  32. Last observed by Cole Wild on 23 Jul 2024
  33. Last observed by Brian Genge on 4 Nov 2023
  34. Last observed by Adrian Lakin on 8 Jul 2022
  35. Last observed by Cole Wild on 23 Jul 2024
  36. Last observed by Cole Wild on 23 Jul 2024
  37. Last observed by Cole Wild on 23 Jul 2024
  38. Last observed by Finn Harty on 15 May 2023
  39. Last observed by Luke Pheneger on 19 Apr 2024
  40. Last observed by Cole Wild on 23 Jul 2024
  41. Last observed by Noah Brinkman on 18 Jun 2024
  42. Last observed by Brookie/Jean Potter on 21 May 2016
  43. Last observed by Steven Mlodinow on 23 Jul 2016
  44. Last observed by Robert Martinez on 3 Sep 2015
  45. Last observed by David Suddjian on 11 Jul 2024
  46. Last observed by Robert Tonge on 30 Jul 2023
  47. Last observed by David Suddjian on 11 Jul 2024
  48. Last observed by Cole Wild on 23 Jul 2024
  49. Last observed by Skye Haas on 9 Apr 2024
  50. Last observed by Cole Wild on 21 Apr 2022
  51. Last observed by Cole Wild on 23 Jul 2024
  52. Last observed by Steven Mlodinow on 9 May 2020
  53. Last observed by Cole Wild on 23 Jul 2024
  54. Last observed by Steve Barlow on 4 May 2024
  55. Last observed by Chandriée Davis on 30 Apr 2024
  56. Last observed by Steve Barlow on 4 May 2024
  57. Last observed by Carol Sullivan on 23 Aug 1997
  58. Last observed by Betty Glass on 21 Aug 2023
  59. Last observed by David Suddjian on 11 Jul 2024
  60. Last observed by Cole Wild on 23 Jul 2024
  61. Last observed by Jonathan Lautenbach on 11 Sep 2022
  62. Last observed by Cole Wild on 23 Jul 2024
  63. Last observed by Finn Harty on 14 Aug 2023
  64. Last observed by Steve Barlow on 4 May 2024
  65. Last observed by Cole Wild on 23 Jul 2024
  66. Last observed by David Suddjian on 11 Jul 2024
  67. Last observed by Steven Mlodinow on 19 Aug 2018
  68. Last observed by Steven Mlodinow on 9 May 2020
  69. Last observed by Betty Glass on 21 Aug 2023
  70. Last observed by Finn Harty on 14 Aug 2023
  71. Last observed by Jonathan Lautenbach on 11 Sep 2022
  72. Last observed by Mackenzie Goldthwait on 29 Aug 2022
  73. Last observed by Steven Mlodinow on 27 Jul 2021
  74. Last observed by Steven Mlodinow on 25 Sep 2016
  75. Last observed by Merijn van den Bosch on 1 May 2024
  76. Last observed by Steven Mlodinow on 12 Jun 2020
  77. Last observed by Noah Brinkman on 18 Jun 2024
  78. Last observed by Cole Wild on 23 Jul 2024
  79. Last observed by Ezekiel Dobson on 12 Apr 2024
  80. Last observed by Cole Wild on 23 Jul 2024
  81. Last observed by Steven Mlodinow on 27 Jun 2022
  82. Last observed by Kathryn Kay on 30 Jun 2023
  83. Last observed by Cole Wild on 23 Jul 2024
  84. Last observed by Steven Mlodinow on 9 May 2020
  85. Last observed by Steven Mlodinow on 9 May 2020
  86. Last observed by Forrest Luke on 3 Jun 2023
  87. Last observed by Cole Wild on 23 Jul 2024
  88. Last observed by Cole Wild on 23 Jul 2024
  89. Last observed by Roger Linfield on 23 May 2016
  90. Last observed by Cole Wild on 23 Jul 2024
  91. Last observed by Steven Mlodinow on 25 Sep 2016
  92. Last observed by Cole Wild on 23 Jul 2024
  93. Last observed by Karen Moulder cc on 20 Apr 2017
  94. Last observed by Steve Barlow on 4 May 2024
  95. Last observed by Josh Bruening on 23 Jun 2021
  96. Last observed by Cole Wild on 23 Jul 2024
  97. Last observed by Caleb Strand on 1 May 2018
  98. Last observed by Cole Wild on 23 Jul 2024
  99. Last observed by Cole Wild on 23 Jul 2024
  100. Last observed by Steve Barlow on 4 May 2024
  101. Last observed by Ezekiel Dobson on 12 Apr 2024
  102. Last observed by janet fedrizzi on 24 Apr 2024
  103. Last observed by Scott Surner on 18 Sep 2018
  104. Last observed by David Griffin on 2 Sep 2016
  105. Last observed by Cole Wild on 23 Jul 2024
  106. Last observed by Cole Wild on 23 Jul 2024
  107. Last observed by Cole Wild on 23 Jul 2024
  108. Last observed by Phil Chaon on 6 Apr 2022
  109. Last observed by Warren Bielenberg on 5 Aug 2016
  110. Last observed by Steve Bennett on 22 Apr 2014
  111. Last observed by Kevin Molloy on 16 Jun 2024
  112. Last observed by Steven Mlodinow on 25 Sep 2016
  113. Last observed by David Dowell on 21 Sep 2019
  114. Last observed by janet fedrizzi on 24 Apr 2024
  115. Last observed by David Suddjian on 11 Jul 2024
  116. Last observed by Cole Wild on 16 Oct 2018
  117. Last observed by Finn Harty on 12 Jul 2023
  118. Last observed by Ryan Dibala on 9 Apr 2023
  119. Last observed by Robert Tonge on 30 Jul 2023
  120. Last observed by James Beatty on 8 Jun 2003
  121. Last observed by Robert Martinez on 3 Sep 2015
  122. Last observed by Doug Kibbe on 15 Sep 2021
  123. Last observed by Chip Clouse on 5 Aug 2023
  124. Last observed by Erik Ostrum on 25 May 2020
  125. Last observed by Jake Shorty on 4 Jul 2021
  126. Last observed by James Beatty on 8 Jun 2003
  127. Last observed by Sean Walters on 1 Jul 2013
  128. Last observed by Tom Johnson on 14 Apr 2019
  129. Last observed by Sue Riffe on 5 Nov 2006
  130. Last observed by Brookie/Jean Potter on 21 May 2016
  131. Last observed by Cole Wild on 23 Jul 2024
  132. Last observed by Cole Wild on 23 Jul 2024
  133. Last observed by David Suddjian on 11 Jul 2024
  134. Last observed by Brian Genge on 4 Nov 2023
  135. Last observed by Charles Hundertmark on 22 May 2016
  136. Last observed by Angelo DelloMargio on 15 Jun 2024
  137. Last observed by Angelo DelloMargio on 14 Jun 2024
  138. Last observed by David Suddjian on 11 Jul 2024
  139. Last observed by Heidi Burgess on 3 Jun 2024
  140. Last observed by Angelo DelloMargio on 13 Jun 2024
  141. Last observed by Cole Wild on 23 Jul 2024
  142. Last observed by Cole Wild on 23 Jul 2024
  143. Last observed by Joshua Smith on 19 Oct 2019
  144. Last observed by Robert Tonge on 30 Jul 2023
  145. Last observed by James Beatty on 8 Jun 2003
  146. Last observed by Eric DeFonso 🦑 on 20 Jun 2021
  147. Last observed by Kevin Molloy on 16 Jun 2024
  148. Last observed by David Suddjian on 11 Jul 2024
  149. Last observed by Cole Wild on 23 Jul 2024
  150. Last observed by Brookie/Jean Potter on 21 May 2016
  151. Last observed by David Suddjian on 11 Jul 2024
  152. Last observed by Christine Snitkin on 19 May 2012
  153. Last observed by M Gaylord on 23 Apr 2024
  154. Last observed by Robert Martinez on 3 Sep 2015
  155. Last observed by michael kiessig on 24 Jun 2024
  156. Last observed by Cole Wild on 23 Jul 2024
  157. Last observed by Brian Genge on 4 Nov 2023
  158. Last observed by Robert Martinez on 11 Mar 2016
  159. Last observed by Mackenzie Goldthwait on 4 Apr 2022
  160. Last observed by Roger Linfield on 23 May 2016
  161. Last observed by Michael Lester on 20 Jun 2021
  162. Last observed by Robert Tonge on 30 Jul 2023
  163. Last observed by Richard Knapton on 17 Apr 2013
  164. Last observed by Chip Clouse on 5 Aug 2023
  165. Last observed by Steven Mlodinow on 27 Aug 2017
  166. Last observed by Cole Wild on 23 Jul 2024
  167. Last observed by Spencer Hurt on 31 May 2024
  168. Last observed by Brian Genge on 9 Aug 2023
  169. Last observed by Cole Wild on 29 Oct 2018
  170. Last observed by Steven Mlodinow on 25 Sep 2016
  171. Last observed by Luke Pheneger on 17 Apr 2023
  172. Last observed by Brian Genge on 4 Nov 2023
  173. Last observed by Sue Riffe on 26 Mar 2018
  174. Last observed by Noah Brinkman on 18 Jun 2024
  175. Last observed by David Suddjian on 11 Jul 2024
  176. Last observed by Cole Wild on 23 Jul 2024
  177. Last observed by Angelo DelloMargio on 15 Jun 2024
  178. Last observed by Luke Pheneger on 20 Jun 2021
  179. Last observed by Joe Gardner on 5 Apr 2018
  180. Last observed by Cole Wild on 23 Jul 2024
  181. Last observed by Kevin Molloy on 16 Jun 2024
  182. Last observed by Brookie/Jean Potter on 21 May 2016
  183. Last observed by Cole Wild on 23 Jul 2024
  184. Last observed by Tyler Wilson on 17 Jun 2024
  185. Last observed by Forrest Luke on 6 Nov 2022
  186. Last observed by Cole Wild on 23 Jul 2024
  187. Last observed by Spencer Hurt on 31 May 2024
  188. Last observed by David Dowell on 21 Sep 2019
  189. Last observed by Cole Wild on 17 Sep 2018
  190. Last observed by Cole Wild on 23 Jul 2024
  191. Last observed by Noah Brinkman on 29 May 2024
  192. Last observed by Steve Barlow on 4 May 2024
  193. Last observed by Jonathan Lautenbach on 11 Sep 2022
  194. Last observed by Steven Mlodinow on 10 Jun 2019

Hybrids (5)

  1. Mallard x Mexican Duck (hybrid) Anas platyrhynchos x diazi
    Last observed by Denis Tétreault on 3 Apr 2023
  2. Ring-necked Duck x Lesser Scaup (hybrid) Aythya collaris x affinis
    Last observed by Steven Mlodinow on 7 Jul 2013
  3. Bufflehead x Common Goldeneye (hybrid) Bucephala albeola x clangula
    Last observed by Michael O'Brien on 12 Apr 2013
  4. Western x Clark's Grebe (hybrid) Aechmophorus occidentalis x clarkii
    Last observed by Oliver Komar on 8 May 2021
  5. Glossy x White-faced Ibis (hybrid) Plegadis falcinellus x chihi
    Last observed by Caleb Strand on 1 May 2018

Additional Taxa (36)

  1. Snow/Ross's Goose Anser caerulescens/rossii
    Last observed by Caleb Strand on 1 May 2018
  2. Cackling/Canada Goose Branta hutchinsii/canadensis
    Last observed by Steven Mlodinow on 19 Aug 2018
  3. Blue-winged/Cinnamon Teal Spatula discors/cyanoptera
    Last observed by Chip Clouse on 5 Aug 2023
  4. Mallard/Mexican Duck Anas platyrhynchos/diazi
    Last observed by Nicole Holmes on 24 Jun 2024
  5. teal sp. Anatidae sp. (teal sp.)
    Last observed by Brian Genge on 4 Nov 2023
  6. dabbling duck sp. Anatidae sp. (dabbling duck sp.)
    Last observed by Brian Genge on 4 Nov 2023
  7. Greater/Lesser Scaup Aythya marila/affinis
    Last observed by Tim Smart on 29 Apr 2023
  8. Aythya sp. Aythya sp.
    Last observed by Josh Bruening on 23 Jun 2021
  9. Common/Barrow's Goldeneye Bucephala clangula/islandica
    Last observed by Doug Kibbe on 5 Nov 2018
  10. duck sp. Anatidae (duck sp.)
    Last observed by Patricia Cullen on 10 Jul 2024
  11. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    Last observed by Angelo DelloMargio on 15 Jun 2024
  12. grebe sp. Podicipedidae sp.
    Last observed by Brian Genge on 9 Aug 2023
  13. Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceus
    Last observed by Libby Megna on 6 May 2017
  14. phalarope sp. Phalaropus sp.
    Last observed by Forrest Luke on 24 Sep 2023
  15. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    Last observed by Shannon Fitch on 13 Aug 2022
  16. large shorebird sp. Scolopacidae sp. (large shorebird sp.)
    Last observed by Diane Roberts on 28 Apr 2022
  17. shorebird sp. Charadriiformes sp.
    Last observed by Brian Genge on 4 Nov 2023
  18. Larus sp. Larus sp.
    Last observed by Brendan Fogarty on 11 Apr 2022
  19. gull sp. Larinae sp.
    Last observed by janet fedrizzi on 9 Jul 2024
  20. Forster's/Common Tern Sterna forsteri/hirundo
    Last observed by Kathryn Kay on 30 Jun 2023
  21. tern sp. Sterninae sp.
    Last observed by Libby Megna on 6 May 2017
  22. Arctic/Pacific Loon Gavia arctica/pacifica
    Last observed by Peter Burke on 19 Jun 2021
  23. loon sp. Gavia sp.
    Last observed by Steven Mlodinow on 16 Jul 2021
  24. cormorant sp. Phalacrocoracidae sp.
    Last observed by Colby Neuman on 22 Jun 2023
  25. Glossy/White-faced Ibis Plegadis falcinellus/chihi
    Last observed by Kathy Mihm Dunning on 18 Jul 2020
  26. Buteo sp. Buteo sp.
    Last observed by Edward Brinkley on 13 Apr 2018
  27. hawk sp. Accipitridae sp. (hawk sp.)
    Last observed by Nick Komar on 14 Apr 2021
  28. large falcon sp. Falco sp. (large falcon sp.)
    Last observed by Charles Hundertmark on 16 May 2009
  29. diurnal raptor sp. Accipitriformes/Falconiformes sp.
    Last observed by Sally Palmer on 11 Apr 2024
  30. Empidonax sp. Empidonax sp.
    Last observed by Hugh Kingery on 16 Jun 1973
  31. swallow sp. Hirundinidae sp.
    Last observed by Nicole Holmes on 24 Jun 2024
  32. bluebird sp. Sialia sp.
    Last observed by Charles Hundertmark on 17 May 2009
  33. Spizella sp. Spizella sp.
    Last observed by Charles Hundertmark on 31 Aug 2021
  34. new world sparrow sp. Passerellidae sp.
    Last observed by Noah Brinkman on 29 May 2024
  35. blackbird sp. Icteridae sp.
    Last observed by Spencer Hurt on 31 May 2024
  36. passerine sp. Passeriformes sp.
    Last observed by Brian Genge on 9 Aug 2023