Edited by Rebecca Johnson, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Tom Hilton, some rights reserved (CC BY)
- 2. (c) birdgal5, some rights reserved (CC BY-NC-ND)
- 3. (c) Dawn Endico, some rights reserved (CC BY-SA)
- 4. (c) Jörg Hempel, some rights reserved (CC BY-SA)
- 5. (c) Gena Bentall, some rights reserved (CC BY-NC), uploaded by Gena Bentall
- 6. (c) Dan and Raymond, some rights reserved (CC BY-NC-SA)
- 7. (c) Brent Miller, some rights reserved (CC BY-NC-ND)
- 8. (c) Andrew J. Louros, some rights reserved (CC BY-NC), uploaded by Andrew J. Louros
- 9. (c) Jeff Coffman, some rights reserved (CC BY)
- 10. (c) randomtruth, some rights reserved (CC BY-NC-SA)
- 11. (c) Thayne Tuason, some rights reserved (CC BY-NC)
- 12. (c) M.E. Sanseverino, some rights reserved (CC BY-NC-ND)
- 13. (c) Todd Ramsden, some rights reserved (CC BY-NC), uploaded by Todd Ramsden
- 14. (c) Henry Burrows, some rights reserved (CC BY-SA)
- 15. (c) Eric in SF, some rights reserved (CC BY-NC-ND)
- 16. (c) 2002 California Academy of Sciences, some rights reserved (CC BY-NC-SA)
- 17. (c) Bastiaan, some rights reserved (CC BY-NC-ND)
- 18. (c) AnneTanne, some rights reserved (CC BY-NC-SA)
- 19. (c) enbodenumer, some rights reserved (CC BY-NC-SA)
- 20. (c) Sciadopitys, some rights reserved (CC BY-SA)
- 21. (c) LJ Moore-McClelland, some rights reserved (CC BY), uploaded by LJ Moore-McClelland
- 22. (c) Phil Sellens, some rights reserved (CC BY)
- 23. (c) dloarie, some rights reserved (CC BY), uploaded by dloarie
- 24. (c) Alex Jones, some rights reserved (CC BY-NC), uploaded by Alex Jones
- 25. (c) Steve Guttman, some rights reserved (CC BY-NC-ND)
- 26. (c) zzzeroX Productions, some rights reserved (CC BY-NC-SA)
- 27. (c) kqedquest, some rights reserved (CC BY-NC)
- 28. (c) AnneTanne, some rights reserved (CC BY-NC)
- 29. (c) Anthony Mendoza, some rights reserved (CC BY-NC-SA)
- 30. (c) Salomé, some rights reserved (CC BY-NC-SA)
- 31. (c) Philip Bouchard, some rights reserved (CC BY-NC-ND)
- 32. (c) Franco Folini, some rights reserved (CC BY)
- 33. (c) CameliaTWU, some rights reserved (CC BY-NC-SA)
- 34. (c) Jerry Kirkhart, some rights reserved (CC BY-NC)
- 35. (c) josh jackson, some rights reserved (CC BY)
- 36. (c) Claudia Vieira, some rights reserved (CC BY-NC), uploaded by Claudia Vieira
- 37. (c) Yasuo Kida, some rights reserved (CC BY)
- 38. (c) Franz Xaver, some rights reserved (CC BY-SA)
- 39. (c) Sue Wetmore, some rights reserved (CC BY-NC), uploaded by Sue Wetmore
- 40. (c) Franco Folini, some rights reserved (CC BY-SA)
- 41. (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda
- 42. (c) Ken-ichi Ueda, some rights reserved (CC BY-NC-SA)
- 43. (c) David Hofmann, some rights reserved (CC BY-NC-ND)
- 44. (c) Alex Abair, some rights reserved (CC BY-NC), uploaded by Alex Abair
- 45. (c) epicnom, some rights reserved (CC BY-NC)
- 46. (c) John Barkla, some rights reserved (CC BY), uploaded by John Barkla
- 47. (c) Terrie Miller, some rights reserved (CC BY-NC-SA)
- 48. (c) Josh*m, some rights reserved (CC BY-NC-SA)
- 49. (c) James Gaither, some rights reserved (CC BY-NC-ND)
- 50. (c) sarahnwilson, some rights reserved (CC BY-NC), uploaded by sarahnwilson
- 51. (c) Alfred Diem, some rights reserved (CC BY)
- 52. (c) Larry, some rights reserved (CC BY-NC-SA)
- 53. (c) Gravitywave, some rights reserved (CC BY-NC-SA)
- 54. (c) Peter Stevens, some rights reserved (CC BY)
- 55. (c) Christian Schwarz, some rights reserved (CC BY-NC), uploaded by Christian Schwarz
- 56. (c) marek, some rights reserved (CC BY), uploaded by marek
- 57. (c) Aleta Rodriguez, some rights reserved (CC BY-NC-ND)
- 58. (c) Joe Decruyenaere, some rights reserved (CC BY-SA)
- 59. (c) Ken-ichi Ueda, some rights reserved (CC BY)
- 60. (c) Wayfinder_73, some rights reserved (CC BY-NC-ND)
- 61. (c) mizgreenejeans, some rights reserved (CC BY-NC), uploaded by mizgreenejeans
- 62. (c) Susan J. Hewitt, some rights reserved (CC BY-NC), uploaded by Susan J. Hewitt
- 63. (c) Doug Greenberg, some rights reserved (CC BY-NC-ND)
- 64. (c) Rodrigo Sala, some rights reserved (CC BY-ND)
- 65. (c) Isaac Kreger, some rights reserved (CC BY-NC), uploaded by Isaac Kreger
- 66. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 67. (c) Anita, some rights reserved (CC BY-NC)
- 68. (c) diskus, some rights reserved (CC BY-NC)
- 69. (c) marlin harms, some rights reserved (CC BY)
- 70. (c) Di, some rights reserved (CC BY-NC), uploaded by Di
- 71. no rights reserved, uploaded by Jesse Rorabaugh
- 72. (c) Anthony Lombardi, some rights reserved (CC BY)
- 73. (c) Elisabeth Feldman, some rights reserved (CC BY-NC-ND)
