Edited by Andrea Wallace, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Mark Dennis, some rights reserved (CC BY-NC), uploaded by Mark Dennis
- 2. (c) Dan Dzurisin, some rights reserved (CC BY-NC-ND)
- 3. (c) Victor W Fazio III, some rights reserved (CC BY-NC), uploaded by Victor W Fazio III
- 4. (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC), uploaded by Robin Gwen Agarwal
- 5. (c) Carmelo López Abad, some rights reserved (CC BY-NC), uploaded by Carmelo López Abad
- 6. (c) Andy Jones, some rights reserved (CC BY-NC)
- 7. (c) Joanne Muis Redwood, some rights reserved (CC BY-NC), uploaded by Joanne Muis Redwood
- 8. (c) Dan Pancamo, some rights reserved (CC BY-SA)
- 9. (c) NatureServe, some rights reserved (CC BY-NC-SA)
- 10. (c) Joby Joseph, some rights reserved (CC BY-NC-SA)
- 11. (c) Kelly Colgan Azar, some rights reserved (CC BY-ND)
- 12. (c) Rick Leche, some rights reserved (CC BY-NC-ND)
- 13. (c) Marv Elliott, some rights reserved (CC BY-NC), uploaded by Marv Elliott
- 14. (c) Jeremy Meyer, some rights reserved (CC BY)
- 15. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 16. (c) Len Blumin, some rights reserved (CC BY-NC-ND)
- 17. (c) Rafael Paredes Montesinos, some rights reserved (CC BY-NC), uploaded by Rafael Paredes Montesinos
- 18. (c) Peter Kaminski, some rights reserved (CC BY)
- 19. (c) Gordon Karre, some rights reserved (CC BY-NC), uploaded by Gordon Karre
- 20. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 21. (c) Jamie Chavez, some rights reserved (CC BY-NC)
- 22. (c) JanetandPhil, some rights reserved (CC BY-NC-ND)
- 23. (c) Ómar Runólfsson, some rights reserved (CC BY)
- 24. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 25. (c) Bill Bouton, some rights reserved (CC BY-SA)
- 26. (c) U.S. Fish and Wildlife Service Northeast Region, some rights reserved (CC BY)
- 27. (c) Dave Fletcher, some rights reserved (CC BY-ND)
- 28. (c) BJ Stacey, some rights reserved (CC BY-NC)
- 29. (c) Laura Gooch, some rights reserved (CC BY-NC-SA)
- 30. (c) Jean-Guy Dallaire, some rights reserved (CC BY-NC-ND)
- 31. (c) Victor W Fazio III, some rights reserved (CC BY-NC-ND), uploaded by Victor W Fazio III
- 32. (c) Rick Leche - Photography, some rights reserved (CC BY-NC-ND)
- 33. (c) Nigel, some rights reserved (CC BY)
- 34. (c) Ned Haight, some rights reserved (CC BY-NC-ND)
- 35. (c) Paul Cools, some rights reserved (CC BY-NC), uploaded by Paul Cools
- 36. (c) Alvaro Jaramillo, some rights reserved (CC BY-NC), uploaded by Alvaro Jaramillo
- 37. (c) Bill Carrell, some rights reserved (CC BY-NC-ND), uploaded by Bill Carrell
- 38. (c) nigel, some rights reserved (CC BY)
- 39. (c) Mike Baird, some rights reserved (CC BY)
- 40. (c) Kenneth Cole Schneider, some rights reserved (CC BY-NC-SA)
- 41. (c) Alejandro Bayer Tamayo, some rights reserved (CC BY-SA)
- 42. (c) Jerry Oldenettel, some rights reserved (CC BY-SA)
- 43. (c) Chris Rohrer, some rights reserved (CC BY-NC), uploaded by Chris Rohrer
- 44. (c) Blake Matheson, some rights reserved (CC BY-NC)
- 45. (c) Michael Woodruff, some rights reserved (CC BY)
- 46. (c) Brian Wulker, some rights reserved (CC BY-NC)
- 47. (c) Wayne, some rights reserved (CC BY-NC)
- 48. (c) Rafy Rodriguez, some rights reserved (CC BY-NC-SA)
- 49. (c) Victoria Gracia, some rights reserved (CC BY-NC-SA)