Edited by David Molina Jiménez, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) JerryFriedman, some rights reserved (CC BY-SA)
- 2. (c) Anita, some rights reserved (CC BY-NC-SA)
- 3. (c) Roberto González, some rights reserved (CC BY-NC), uploaded by Roberto González
- 4. (c) iturriagal, some rights reserved (CC BY-NC-ND), uploaded by iturriagal
- 5. (c) angel_castillo_birdingtours, some rights reserved (CC BY-NC), uploaded by angel_castillo_birdingtours
- 6. (c) Dmitry Mozzherin, some rights reserved (CC BY-NC-SA)
- 7. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
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- 9. (c) Gavan Watson, some rights reserved (CC BY-NC-SA)
- 10. (c) C Yasuda, some rights reserved (CC BY-NC), uploaded by C Yasuda
- 11. (c) Aitor, some rights reserved (CC BY), uploaded by Aitor
- 12. (c) Paul Cools, some rights reserved (CC BY-NC), uploaded by Paul Cools
- 13. (c) David Monroy R, some rights reserved (CC BY-NC), uploaded by David Monroy R
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- 15. (c) Steven Easley, some rights reserved (CC BY-NC), uploaded by Steven Easley
- 16. (c) Paul Bedell, some rights reserved (CC BY-SA), uploaded by Paul Bedell
- 17. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 18. (c) Tom Benson, some rights reserved (CC BY-NC-ND)
- 19. (c) dominic sherony, some rights reserved (CC BY-SA)
- 20. (c) Salvador Poot Villanueva, some rights reserved (CC BY-NC), uploaded by Salvador Poot Villanueva
- 21. (c) Pat Deacon, some rights reserved (CC BY-NC), uploaded by Pat Deacon
- 22. (c) Lip Kee Yap, some rights reserved (CC BY-SA)
- 23. (c) Doug Greenberg, some rights reserved (CC BY-NC-ND)
- 24. (c) Isidro Vila Verde, some rights reserved (CC BY-NC)
- 25. (c) tnewman, some rights reserved (CC BY-NC)
- 26. (c) nachovallarta, some rights reserved (CC BY-NC), uploaded by nachovallarta
- 27. (c) David Rodríguez Arias, some rights reserved (CC BY-NC-SA)
- 28. (c) Kakalotli, some rights reserved (CC BY-NC), uploaded by Kakalotli
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- 30. (c) Bobby McCabe, some rights reserved (CC BY), uploaded by Bobby McCabe
- 31. (c) upupamartin, some rights reserved (CC BY-NC-ND), uploaded by upupamartin
- 32. (c) Julius Simonelli, some rights reserved (CC BY), uploaded by Julius Simonelli
- 33. (c) RD, some rights reserved (CC BY), uploaded by RD
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- 35. (c) Wanja Krah, some rights reserved (CC BY-NC-SA)
- 36. (c) Kenneth Cole Schneider, some rights reserved (CC BY-NC-SA)
- 37. (c) Juan Jose Montero Rodriguez, some rights reserved (CC BY-NC-SA)
- 38. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 39. (c) Len Blumin, some rights reserved (CC BY-NC-ND)
- 40. (c) Dan Roach, some rights reserved (CC BY-NC), uploaded by Dan Roach
- 41. (c) Annika Lindqvist, some rights reserved (CC BY), uploaded by Annika Lindqvist
- 42. (c) Isidro Vila Verde, some rights reserved (CC BY-NC-ND)
- 43. (c) Juan Bou Riquer, some rights reserved (CC BY-NC-SA), uploaded by Juan Bou Riquer
- 44. (c) Rolando Pasos Pérez, some rights reserved (CC BY-NC), uploaded by Rolando Pasos Pérez
- 45. (c) johnmeikle, some rights reserved (CC BY-NC), uploaded by johnmeikle
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- 47. (c) Christian Schwarz, some rights reserved (CC BY-NC), uploaded by Christian Schwarz
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- 49. (c) Don Faulkner, some rights reserved (CC BY-SA)
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- 51. (c) Carol Foil, some rights reserved (CC BY-NC-ND)
- 52. (c) Chris Rohrer, some rights reserved (CC BY-NC), uploaded by Chris Rohrer
- 53. (c) Laura Gaudette, some rights reserved (CC BY), uploaded by Laura Gaudette
- 54. (c) Gabriel Camilo Jaramillo Giraldo, some rights reserved (CC BY-NC-SA), uploaded by Gabriel Camilo Jaramillo Giraldo
- 55. (c) Dominic Sherony, some rights reserved (CC BY-SA)
- 56. (c) The Lilac Breasted Roller, some rights reserved (CC BY)
- 57. (c) itram, some rights reserved (CC BY-NC), uploaded by itram
- 58. (c) Soheil Zendeh, some rights reserved (CC BY-NC-SA), uploaded by Soheil Zendeh
- 59. (c) BJ Stacey, some rights reserved (CC BY-NC)
- 60. (c) Steve Garvie, some rights reserved (CC BY-SA)
- 61. (c) Arnold Wijker, some rights reserved (CC BY-NC), uploaded by Arnold Wijker
- 62. (c) Rick Leche, some rights reserved (CC BY-NC-ND)
- 63. (c) mlhradio, some rights reserved (CC BY-NC)
- 64. (c) Bernard DUPONT, some rights reserved (CC BY-SA)
- 65. (c) Luis Guzmán, some rights reserved (CC BY-NC), uploaded by Luis Guzmán
- 66. (c) Dario Sanches, some rights reserved (CC BY-SA)
- 67. (c) javiergross, some rights reserved (CC BY-NC), uploaded by javiergross
- 68. (c) Justyn Stahl, some rights reserved (CC BY-NC), uploaded by Justyn Stahl
- 69. (c) Patricia Tiller, some rights reserved (CC BY-NC), uploaded by Patricia Tiller
- 70. (c) Craig K. Hunt, some rights reserved (CC BY-NC-ND), uploaded by Craig K. Hunt