Photos:
- 1. (c) Mike Baird, some rights reserved (CC BY)
- 2. (c) Len Blumin, some rights reserved (CC BY)
- 3. (c) Blake Matheson, some rights reserved (CC BY-NC)
- 4. (c) Ferran Pestaña, some rights reserved (CC BY-NC)
- 5. (c) Jack Wolf, some rights reserved (CC BY-ND)
- 6. (c) Per Verdonk, some rights reserved (CC BY-NC)
- 7. (c) Allan Hack, some rights reserved (CC BY-ND)
- 8. (c) U.S. Fish & Wildlife Service - Pacific Region's, some rights reserved (CC BY)
- 9. (c) Jörg Hempel, some rights reserved (CC BY-SA)
- 10. (c) Rick Leche - Photography, some rights reserved (CC BY-NC-ND)
- 11. (c) Rudo JureÄek, some rights reserved (CC BY-NC-SA)
- 12. (c) jim gifford, some rights reserved (CC BY-SA)
- 13. (c) Doug Greenberg, some rights reserved (CC BY-NC-ND)
- 14. (c) Eric Heupel, some rights reserved (CC BY-NC)
- 15. (c) Francesco Veronesi, some rights reserved (CC BY-NC-SA)
- 16. (c) Linda Tanner, some rights reserved (CC BY)
- 17. (c) Mikko Koponen, some rights reserved (CC BY)
- 18. (c) Marj Kibby, some rights reserved (CC BY-NC)
- 19. (c) Len Blumin, some rights reserved (CC BY-NC-ND)
- 20. (c) Andreu Anguera, some rights reserved (CC BY-NC-ND)
- 21. (c) Dan Pancamo, some rights reserved (CC BY-SA)
- 22. (c) Jamie Chavez, some rights reserved (CC BY-NC)
- 23. (c) ian wetton, some rights reserved (CC BY-NC-ND)
- 24. (c) Sergey Yeliseev, some rights reserved (CC BY-NC-ND)
- 25. (c) 116916927065934112165, some rights reserved (CC BY-SA), uploaded by 116916927065934112165
- 26. (c) Lip Kee Yap, some rights reserved (CC BY-SA)
- 27. (c) Nick Chill, some rights reserved (CC BY-NC-SA)
- 28. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 29. (c) barloventomagico, some rights reserved (CC BY-NC-ND)
- 30. (c) Pablo Caceres Contreras, some rights reserved (CC BY-NC-ND)
- 31. (c) Jorge Montejo, some rights reserved (CC BY-NC-SA)
- 32. (c) Mark Kilner, some rights reserved (CC BY-NC-SA)
- 33. (c) Isidro Vila Verde, some rights reserved (CC BY-NC)
- 34. (c) BJ Stacey, some rights reserved (CC BY-NC)
- 35. (c) StormPetrel1, some rights reserved (CC BY-NC)
- 36. (c) Don Loarie, some rights reserved (CC BY)
- 37. (c) Marcel Holyoak, some rights reserved (CC BY-NC-ND)
- 38. (c) Don Faulkner, some rights reserved (CC BY-SA)
- 39. (c) Larry Meade, some rights reserved (CC BY-NC-SA)
- 40. (c) Caleb Slemmons, some rights reserved (CC BY-NC)
- 41. (c) Patrick Coin, some rights reserved (CC BY-NC-SA)
- 42. (c) Erin and Lance Willett, some rights reserved (CC BY-NC-ND)
- 43. (c) Biopix, some rights reserved (CC BY-NC)
- 44. (c) Franco Folini, some rights reserved (CC BY)
- 45. (c) Jerry Kirkhart, some rights reserved (CC BY-NC)
- 46. (c) James Steamer, some rights reserved (CC BY-NC), uploaded by James Steamer
- 47. (c) TexasEagle, some rights reserved (CC BY-NC)
- 48. (c) Dan Irizarry, some rights reserved (CC BY-NC-SA)
- 49. (c) Guy Monty, some rights reserved (CC BY-NC-SA)
- 50. (c) Tom Benson, some rights reserved (CC BY-NC-ND)
- 51. (c) Gary Ashley, some rights reserved (CC BY-NC)
- 52. (c) Pierre-Selim, some rights reserved (CC BY-SA)
- 53. (c) docentjoyce, some rights reserved (CC BY)
- 54. (c) Alan Vernon, some rights reserved (CC BY)
- 55. (c) Tom McC., some rights reserved (CC BY-NC-ND)
- 56. (c) Dick Daniels (http://carolinabirds.org/), some rights reserved (CC BY-SA)
- 57. (c) Stephen Clegg, some rights reserved (CC BY-NC-ND)
- 58. (c) Andrew, some rights reserved (CC BY-NC)
- 59. (c) jomilo75, some rights reserved (CC BY)
- 60. (c) Sarah Kim, some rights reserved (CC BY-NC-ND)
- 61. (c) Nic McPhee, some rights reserved (CC BY-SA)
- 62. (c) Maggie.Smith, some rights reserved (CC BY-NC)
- 63. (c) Keith Marshall, some rights reserved (CC BY-NC-SA)
- 64. (c) stonebird, some rights reserved (CC BY-NC-SA)
- 65. (c) Sean Fitzgerald, some rights reserved (CC BY-NC)
- 66. (c) Tim Lenz, some rights reserved (CC BY-NC)
- 67. (c) Gregory "Slobirdr" Smith, some rights reserved (CC BY-SA)
- 68. (c) Eric de Leeuw, some rights reserved (CC BY-NC-ND)
- 69. (c) Raj Boora, some rights reserved (CC BY)
- 70. (c) David Baron, some rights reserved (CC BY-SA)
- 71. (c) D. Alexander Carrillo Mtz., some rights reserved (CC BY)
- 72. (c) Scott Page, some rights reserved (CC BY-NC-ND)
- 73. (c) Steve Berardi, some rights reserved (CC BY-SA)
- 74. (c) Stewart Ho, some rights reserved (CC BY-NC-ND)
- 75. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 76. (c) Bob, some rights reserved (CC BY-NC-ND)
- 77. (c) C.V. Vick, some rights reserved (CC BY-NC-ND)
- 78. (c) Shenghung Lin, some rights reserved (CC BY-NC-ND)
- 79. (c) Robert, some rights reserved (CC BY-NC)
- 80. (c) Henry T. McLin, some rights reserved (CC BY-NC-ND)
- 81. (c) David Allen, some rights reserved (CC BY-NC-SA)
- 82. (c) Steve Garvie, some rights reserved (CC BY-NC-SA)
- 83. (c) Rocklin Lyons, some rights reserved (CC BY-NC)
- 84. (c) Rick Leche - Photography, some rights reserved (CC BY-NC)
- 85. (c) sarbhloh, some rights reserved (CC BY-NC-ND)
- 86. (c) Doris, some rights reserved (CC BY-NC-SA)
- 87. (c) Jason Stuck, some rights reserved (CC BY-NC-ND)
- 88. (c) Rick Leche, some rights reserved (CC BY-NC-ND)
- 89. (c) dnydick, some rights reserved (CC BY-NC), uploaded by dnydick
- 90. (c) Charles Lam, some rights reserved (CC BY-SA)
- 91. (c) Rick Leche, some rights reserved (CC BY-NC)
- 92. (c) Dan Dzurisin, some rights reserved (CC BY-NC-ND)
- 93. (c) Luciano Giussani, some rights reserved (CC BY-NC-SA)
- 94. (c) ken, some rights reserved (CC BY-NC-ND)
- 95. (c) Derek Scott, some rights reserved (CC BY-NC)
- 96. (c) Robert Keereweer, some rights reserved (CC BY-NC)
- 97. (c) Mary Harrsch, some rights reserved (CC BY-NC-SA)
- 98. (c) Paul Sullivan, some rights reserved (CC BY-ND)
- 99. (c) Anita, some rights reserved (CC BY-NC)
- 100. (c) Lamerie, some rights reserved (CC BY-NC)
- 101. (c) Diane, some rights reserved (CC BY-NC-ND)
- 102. (c) Gavan Watson, some rights reserved (CC BY-NC-ND)
- 103. (c) matt knoth, some rights reserved (CC BY-NC-ND)
- 104. (c) Eric Bégin, some rights reserved (CC BY-NC-ND)
- 105. (c) Jerry Downs, some rights reserved (CC BY-ND)
- 106. (c) Pablo Lèautaud, some rights reserved (CC BY-NC-ND), uploaded by Pablo Lèautaud
- 107. (c) BackyardBirderWA, some rights reserved (CC BY-NC-ND)
- 108. (c) Jessica Merz, some rights reserved (CC BY)
- 109. (c) Anita Gould, some rights reserved (CC BY-NC)
- 110. (c) Anita Gould, some rights reserved (CC BY-NC), uploaded by Anita Gould
- 111. (c) Kai Schreiber, some rights reserved (CC BY-NC-SA)
- 112. (c) Richard Johnson, some rights reserved (CC BY-NC-SA)
- 113. (c) Kelly Colgan Azar, some rights reserved (CC BY-ND)
- 114. (c) Robin Horn, some rights reserved (CC BY-NC-ND)
- 115. (c) Vitaliy Khustochka, some rights reserved (CC BY-NC)
- 116. (c) Frank Carey, some rights reserved (CC BY-NC-SA)
- 117. (c) Jen Goellnitz, some rights reserved (CC BY-NC-ND)
- 118. (c) Yathin, some rights reserved (CC BY-NC-ND)
- 119. (c) Norm Townsend, some rights reserved (CC BY-NC-ND)
- 120. (c) Arthur Chapman, some rights reserved (CC BY-NC-SA)
- 121. (c) Terry & Julie, some rights reserved (CC BY-NC-SA)
- 122. (c) Stewart Ho, some rights reserved (CC BY-NC-SA)
- 123. (c) Tony Hisgett, some rights reserved (CC BY)
- 124. (c) Joby Joseph, some rights reserved (CC BY-NC-SA)
- 125. (c) Bill Bouton, some rights reserved (CC BY-NC-SA)
- 126. (c) Trisha Shears, some rights reserved (CC BY-SA)
- 127. (c) leppyone, some rights reserved (CC BY)
- 128. (c) Rafael Paredes Montesinos, some rights reserved (CC BY-NC), uploaded by Rafael Paredes Montesinos
- 129. (c) JanetandPhil, some rights reserved (CC BY-NC-ND)
- 130. (c) Laura Gooch, some rights reserved (CC BY-NC-SA)
- 131. (c) Carol Foil, some rights reserved (CC BY-NC-ND)
- 132. (c) Shanthanu Bhardwaj, some rights reserved (CC BY-SA)
- 133. (c) Jörg Hempel, some rights reserved (CC BY-SA)
- 134. (c) Jose Sousa, some rights reserved (CC BY-NC-ND)
- 135. (c) Jean-Guy Dallaire, some rights reserved (CC BY-NC-ND)
- 136. (c) Minette Layne, some rights reserved (CC BY-NC)
- 137. (c) Eddie Callaway, some rights reserved (CC BY-ND)
- 138. (c) Doug Greenberg, some rights reserved (CC BY-NC)
- 139. (c) Brian Peterson, some rights reserved (CC BY-NC-ND)
- 140. (c) Pablo Lèautaud, some rights reserved (CC BY-NC-ND)
- 141. (c) Ken Schneider, some rights reserved (CC BY-NC), uploaded by Ken Schneider
- 142. (c) Dmitry Mozzherin, some rights reserved (CC BY-NC-SA)
- 143. (c) Ruben, some rights reserved (CC BY-NC-ND)
- 144. (c) Jason Means, some rights reserved (CC BY-NC-ND)
- 145. (c) Gavan Watson, some rights reserved (CC BY-NC-SA)
- 146. (c) Scott Young, some rights reserved (CC BY-NC)
- 147. (c) Syd Phillips, some rights reserved (CC BY-NC)
- 148. (c) Jim Frazier, some rights reserved (CC BY-NC-ND)
- 149. (c) Michael Woodruff, some rights reserved (CC BY-SA)
- 150. (c) Minette, some rights reserved (CC BY-NC)
- 151. (c) Andy Purviance, some rights reserved (CC BY-NC)
- 152. (c) A. Jaszlics, some rights reserved (CC BY-NC)
- 153. (c) randomtruth, some rights reserved (CC BY-NC-SA)
- 154. (c) Bill Bouton, some rights reserved (CC BY-SA)
- 155. (c) Josh Henderson, some rights reserved (CC BY-SA)
- 156. (c) Ken-ichi Ueda, some rights reserved (CC BY)
- 157. (c) ntenny, some rights reserved (CC BY-NC-SA)
- 158. (c) Steve Lew, some rights reserved (CC BY-NC-SA)
- 159. (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda
- 160. (c) Brian Gratwicke, some rights reserved (CC BY)
- 161. (c) J. N. Stuart, some rights reserved (CC BY-NC-ND)
- 162. no rights reserved
- 163. (c) James Gaither, some rights reserved (CC BY-NC-ND)
- 164. (c) Natalie McNear, some rights reserved (CC BY-NC)
- 165. (c) Francisco Farriols Sarabia, some rights reserved (CC BY), uploaded by Francisco Farriols Sarabia
- 166. (c) Éamonn O'Brien-Strain, some rights reserved (CC BY-NC-SA)
- 167. (c) James Maughn, some rights reserved (CC BY-NC), uploaded by James Maughn
- 168. (c) Stewart and Vickie Carrington, some rights reserved (CC BY-NC-ND)
- 169. (c) Bryant Olsen, some rights reserved (CC BY-NC), uploaded by Bryant Olsen
- 170. (c) J. N. Stuart, all rights reserved, uploaded by J. N. Stuart
- 171. (c) MaryEllen and Paul, some rights reserved (CC BY-NC)
- 172. (c) SMBishop, some rights reserved (CC BY-SA)
- 173. (c) Tanya Dewey, some rights reserved (CC BY-NC-SA)
- 174. (c) unquenchable.fire, some rights reserved (CC BY-NC-ND)
- 175. (c) conabio_bancodeimagenes, some rights reserved (CC BY-NC-ND), uploaded by conabio_bancodeimagenes
- 176. (c) Keaton Wilson, some rights reserved (CC BY)
- 177. (c) adamdv18, some rights reserved (CC BY-NC)
- 178. (c) Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Mammals, some rights reserved (CC BY-NC-SA)
- 179. (c) NOAA Photo Library, some rights reserved (CC BY)
- 180. (c) Travis, some rights reserved (CC BY-NC)
- 181. (c) WoRMS for SMEBD, some rights reserved (CC BY-NC-SA)
- 182. (c) Tim Ellis, some rights reserved (CC BY-NC)
- 183. (c) Thomas Kohler, some rights reserved (CC BY-SA)
- 184. (c) Susan Adams, some rights reserved (CC BY-SA)
- 185. (c) 科学出版社, some rights reserved (CC BY-NC-SA)
- 186. (c) Joe McKenna, some rights reserved (CC BY-NC-ND)
- 187. (c) Jörg Wendland, some rights reserved (CC BY-NC)
- 188. (c) Paruula, some rights reserved (CC BY-NC-SA)
- 189. (c) Dina Dubrovskaya, some rights reserved (CC BY-NC-SA)
- 190. (c) Christine Veeschkens, some rights reserved (CC BY-NC-ND)
- 191. (c) Stefan Thiesen, some rights reserved (CC BY-NC-ND)
- 192. (c) David H. Webster, some rights reserved (CC BY-NC-ND)
- 193. (c) Michael Dawes, some rights reserved (CC BY-NC)
- 194. (c) Josh More, some rights reserved (CC BY-NC-ND)
- 195. (c) Joachim S. Müller, some rights reserved (CC BY-NC-SA)
- 196. (c) Isai Dominguez, some rights reserved (CC BY-NC-ND), uploaded by Isai Dominguez
- 197. (c) Arthur Chapman, some rights reserved (CC BY)
- 198. (c) kqedquest, some rights reserved (CC BY-NC)
- 199. (c) Jason Pratt, some rights reserved (CC BY)
- 200. (c) SolidElectronics, some rights reserved (CC BY-NC)
- 201. (c) Claire H., some rights reserved (CC BY-SA)
- 202. (c) Anita, some rights reserved (CC BY-NC-SA)
- 203. (c) Vicki & Chuck Rogers, some rights reserved (CC BY-NC-SA)
- 204. (c) Valerie, some rights reserved (CC BY-NC-ND)
- 205. (c) James Marvin Phelps, some rights reserved (CC BY-NC)
- 206. (c) Terrie Miller, some rights reserved (CC BY-NC-SA)
- 207. (c) thaths, some rights reserved (CC BY-NC)
- 208. (c) Sandy/Chuck Harris, some rights reserved (CC BY-NC)
- 209. (c) Jessie Hirsch, some rights reserved (CC BY)
- 210. (c) Howard Cheng, some rights reserved (CC BY-SA)
- 211. (c) Glen, some rights reserved (CC BY)
- 212. (c) Ken-ichi Ueda, some rights reserved (CC BY-NC-SA)
- 213. (c) Larry Miller, some rights reserved (CC BY-NC)
- 214. (c) Wildlife Wanderer, some rights reserved (CC BY-NC-ND)
- 215. (c) dloarie, some rights reserved (CC BY), uploaded by dloarie
- 216. (c) Brandon, some rights reserved (CC BY-NC-SA)
- 217. (c) Alex O'Neal, some rights reserved (CC BY-SA)
- 218. (c) Davide, some rights reserved (CC BY-SA)
- 219. (c) Matt MacManes, some rights reserved (CC BY-NC-SA)
- 220. (c) 2008 Bill Stagnaro, some rights reserved (CC BY-SA)
- 221. (c) David Friel, some rights reserved (CC BY)
- 222. (c) Jeffrey Beall, some rights reserved (CC BY-SA)
- 223. (c) Larry McCombs, some rights reserved (CC BY-NC-SA)
- 224. (c) Jeremy Yoder, some rights reserved (CC BY-NC)
- 225. (c) 1999 California Academy of Sciences, some rights reserved (CC BY-NC-SA)
- 226. (c) J. Maughn, some rights reserved (CC BY-NC), uploaded by J. Maughn
- 227. (c) Bob Dodge, some rights reserved (CC BY), uploaded by Bob Dodge
- 228. (c) Sarah Caufield, some rights reserved (CC BY-NC-SA)
- 229. (c) T.SC, some rights reserved (CC BY-NC-ND)
- 230. (c) Joshua, some rights reserved (CC BY-NC-SA)
- 231. (c) smerikal, some rights reserved (CC BY-SA)
- 232. (c) Anna Armitage, some rights reserved (CC BY-NC-ND)
- 233. (c) Amadej Trnkoczy, some rights reserved (CC BY-NC-SA)
- 234. (c) Stavros Markopoulos, some rights reserved (CC BY-NC-ND)
- 235. (c) birdgal5, some rights reserved (CC BY-NC-ND)
- 236. (c) Rodrigo Sala, some rights reserved (CC BY-ND)
- 237. (c) Thomas Bresson, some rights reserved (CC BY)
- 238. (c) brian lee clements, some rights reserved (CC BY-NC)
- 239. (c) Bastiaan, some rights reserved (CC BY-NC-ND)
- 240. (c) little lawyers inc., some rights reserved (CC BY-NC)
- 241. (c) J Brew, some rights reserved (CC BY-SA)
- 242. (c) Brandi Tressler, some rights reserved (CC BY-ND)
- 243. (c) Upsilon Andromedae, some rights reserved (CC BY)
- 244. (c) mattmaves, some rights reserved (CC BY), uploaded by mattmaves
- 245. (c) Ashour Rehana, some rights reserved (CC BY-NC-ND)
- 246. (c) --Tico--, some rights reserved (CC BY-NC-ND)
- 247. (c) Zen Faulkes, some rights reserved (CC BY-NC)
- 248. (c) Martin LaBar, some rights reserved (CC BY-NC)
- 249. (c) Christopher Porter, some rights reserved (CC BY-NC-SA)
- 250. (c) Jenn Forman Orth, some rights reserved (CC BY-NC-SA)
- 251. (c) amy lemur, some rights reserved (CC BY-NC-ND)
- 252. (c) Dan Hershman, some rights reserved (CC BY)
- 253. (c) Brian Yap (葉), some rights reserved (CC BY-NC)
- 254. (c) pfly, some rights reserved (CC BY-SA)
- 255. (c) Raquel e Ives, some rights reserved (CC BY-NC-SA)
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