Edited by Sergio Castañeda, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Patrick Coin, some rights reserved (CC BY-NC-SA)
- 2. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 3. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 4. (c) Dmitry Mozzherin, some rights reserved (CC BY-NC-SA)
- 5. (c) BJ Stacey, some rights reserved (CC BY-NC)
- 6. (c) Ximo Galarza, some rights reserved (CC BY-NC-SA)
- 7. (c) U.S. Fish and Wildlife Service Northeast Region, some rights reserved ()
- 8. (c) Jürgen Mangelsdorf, some rights reserved (CC BY-NC-ND)
- 9. (c) Taran Rampersad, some rights reserved (CC BY-NC-SA)
- 10. (c) Tony Morris, some rights reserved (CC BY-NC)
- 11. (c) Pablo Lèautaud, some rights reserved (CC BY-NC-ND), uploaded by Pablo Lèautaud
- 12. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 13. (c) Juan Carlos Pérez Magaña, some rights reserved (CC BY-NC), uploaded by Juan Carlos Pérez Magaña
- 14. (c) Len Blumin, some rights reserved (CC BY-NC-ND)
- 15. (c) JerryFriedman, some rights reserved (CC BY-SA)
- 16. (c) Secretaría de Medio Ambiente y Ordenamiento Territorial, some rights reserved (CC BY-NC), uploaded by Secretaría de Medio Ambiente y Ordenamiento Territorial
- 17. (c) Victor W Fazio III, some rights reserved (CC BY-NC-ND), uploaded by Victor W Fazio III
- 18. (c) Paul Cools, some rights reserved (CC BY-NC), uploaded by Paul Cools
- 19. (c) davy, some rights reserved (CC BY-NC), uploaded by davy
- 20. (c) Laura Gooch, some rights reserved (CC BY-NC-SA)
- 21. (c) Dominic Sherony, some rights reserved (CC BY-SA)
- 22. (c) Pablo Lèautaud, some rights reserved (CC BY-NC-ND)
- 23. (c) Michael, some rights reserved (CC BY-NC-SA)
- 24. (c) Ken Schneider, some rights reserved (CC BY-NC), uploaded by Ken Schneider
- 25. (c) Maggie.Smith, some rights reserved (CC BY-NC)
- 26. (c) Lip Kee Yap, some rights reserved (CC BY-SA)
- 27. (c) Leslie Flint, some rights reserved (CC BY-NC), uploaded by Leslie Flint
- 28. (c) eleazarbenitezmartinez, some rights reserved (CC BY-NC-SA), uploaded by eleazarbenitezmartinez
- 29. (c) Kerry Carloy, some rights reserved (CC BY-NC), uploaded by Kerry Carloy
- 30. (c) Ingrid Taylar, some rights reserved (CC BY)
- 31. (c) Jamie Chavez, some rights reserved (CC BY-NC)
- 32. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
- 33. (c) Jean-Guy Dallaire, some rights reserved (CC BY-NC-ND)
- 34. (c) Blake Matheson, some rights reserved (CC BY-NC)
- 35. (c) K Schneider, some rights reserved (CC BY-NC)
- 36. (c) nigel, some rights reserved (CC BY)
- 37. (c) Christian Artuso, some rights reserved (CC BY-NC-ND), uploaded by Christian Artuso
- 38. (c) Tom Benson, some rights reserved (CC BY-NC-ND)
- 39. (c) Brennan Mulrooney, some rights reserved (CC BY-SA)
- 40. (c) J. N. Stuart, all rights reserved, uploaded by J. N. Stuart
- 41. (c) kathleenfspicer, some rights reserved (CC BY-NC)
- 42. (c) Rafy Rodriguez, some rights reserved (CC BY-NC-SA)
- 43. (c) Derek Scott, some rights reserved (CC BY-NC)
- 44. (c) Frode Jacobsen, some rights reserved (CC BY)
- 45. (c) Michael Woodruff, some rights reserved (CC BY)
- 46. (c) Pablo Leautaud, some rights reserved (CC BY-NC)
- 47. (c) Becky Gregory, some rights reserved (CC BY-ND)
- 48. (c) BlueRidgeKitties, some rights reserved (CC BY-NC-SA)
- 49. (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda
- 50. (c) psweet, some rights reserved (CC BY-SA), uploaded by psweet
- 51. (c) Steven Bach, some rights reserved (CC BY-NC-SA), uploaded by Steven Bach