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Photo Credits
- 1. (c) Rick Leche - Photography, some rights reserved (CC BY-NC-ND)
- 2. (c) psweet, some rights reserved (CC BY-SA), uploaded by psweet
- 3. (c) Jim Johnson, some rights reserved (CC BY-NC-ND), uploaded by Jim Johnson
- 4. (c) Fred Hochstaedter, some rights reserved (CC BY-NC-SA)
- 5. (c) Rick Leche - Photography, some rights reserved (CC BY-NC)
- 6. (c) Richard Wottrich, some rights reserved (CC BY-NC), uploaded by Richard Wottrich
- 7. (c) Andrew Reding, some rights reserved (CC BY-NC-ND)
- 8. (c) Alejandro Bayer Tamayo, some rights reserved (CC BY-SA)
- 9. (c) matlacha, some rights reserved (CC BY-NC-SA)
- 10. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 11. (c) fiddleman, some rights reserved (CC BY-NC), uploaded by fiddleman
- 12. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 13. (c) barloventomagico, some rights reserved (CC BY-NC-ND)
- 14. (c) craig wilson, some rights reserved (CC BY-NC-SA), uploaded by craig wilson
- 15. (c) Chris Rohrer, some rights reserved (CC BY-NC), uploaded by Chris Rohrer
- 16. (c) Bengt Nyman, some rights reserved (CC BY)
- 17. (c) John Beetham, some rights reserved (CC BY-NC-SA)
- 18. (c) anonymous, some rights reserved (CC BY-SA)
- 19. (c) Rick Leche, some rights reserved (CC BY-NC)
- 20. (c) Mark Kilner, some rights reserved (CC BY-NC-SA)
- 21. (c) Rick Leche, some rights reserved (CC BY-NC-ND)
- 22. (c) Doug Greenberg, some rights reserved (CC BY-NC-ND)
- 23. (c) Robert Keereweer, some rights reserved (CC BY-NC)
- 24. (c) Luciano Giussani, some rights reserved (CC BY-NC-SA)
- 25. (c) Paul Cools, some rights reserved (CC BY-NC), uploaded by Paul Cools
- 26. (c) John D Reynolds, some rights reserved (CC BY-NC), uploaded by John D Reynolds
- 27. (c) David Merrett, some rights reserved (CC BY)
- 28. (c) Joanne Redwood, some rights reserved (CC BY-NC), uploaded by Joanne Redwood
- 29. (c) BJ Stacey, some rights reserved (CC BY-NC), uploaded by BJ Stacey
- 30. (c) Alpsdake, some rights reserved (CC BY-SA)
- 31. (c) Bill Bouton, some rights reserved (CC BY-SA)
- 32. (c) Judy Gallagher, some rights reserved (CC BY)
- 33. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 34. (c) Erin and Lance Willett, some rights reserved (CC BY-NC-ND)
- 35. (c) Kev Chapman, some rights reserved (CC BY)
- 36. (c) brendan.lally, some rights reserved (CC BY)
- 37. (c) ian wetton, some rights reserved (CC BY-NC-ND)
- 38. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
- 39. (c) Игорь Двуреков, some rights reserved (CC BY-NC), uploaded by Игорь Двуреков
- 40. (c) kens18, some rights reserved (CC BY-NC), uploaded by kens18
- 41. (c) Biodiversity Heritage Library, some rights reserved (CC BY)
- 42. (c) Bill Carrell, some rights reserved (CC BY-NC-ND), uploaded by Bill Carrell
- 43. (c) Victor Fazio, some rights reserved (CC BY-NC-SA)
- 44. (c) Alan Vernon, some rights reserved (CC BY-NC-SA)
- 45. (c) Joseph F. Pescatore, some rights reserved (CC BY-ND)
- 46. (c) andriy, some rights reserved (CC BY-NC), uploaded by andriy
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- 52. (c) Laura Clark, some rights reserved (CC BY), uploaded by Laura Clark
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- 55. (c) Dan Pancamo, some rights reserved (CC BY-SA)
- 56. (c) Distant Hill Gardens, some rights reserved (CC BY-NC-ND)
- 57. (c) Steve Guttman NYC, some rights reserved (CC BY-NC-ND)
- 58. (c) unnormalized, some rights reserved (CC BY-SA)
- 59. (c) Maris Pukitis, some rights reserved (CC BY-NC-SA)
- 60. (c) Tony Hisgett, some rights reserved (CC BY)
- 61. (c) Henry T. McLin, some rights reserved (CC BY-NC-ND)
- 62. (c) dloarie, some rights reserved (CC BY), uploaded by dloarie
- 63. (c) tukkki, some rights reserved (CC BY-NC)
- 64. (c) Tim Harding, some rights reserved (CC BY-NC-ND)
- 65. (c) Rolando Pasos Pérez, some rights reserved (CC BY-NC), uploaded by Rolando Pasos Pérez
- 66. (c) philippe, some rights reserved (CC BY-NC-ND)
- 67. (c) Joseph D Kurtz, some rights reserved (CC BY-NC), uploaded by Joseph D Kurtz
- 68. (c) Steve Thompson, some rights reserved (CC BY-NC-SA)
- 69. (c) Sergey Yeliseev, some rights reserved (CC BY-NC-ND)
- 70. (c) Becky Matsubara, some rights reserved (CC BY)
- 71. (c) Ralph Arvesen, some rights reserved (CC BY-NC)
- 72. (c) Francesco Veronesi, some rights reserved (CC BY-NC-SA)
- 73. (c) Maggie.Smith, some rights reserved (CC BY-NC)
- 74. (c) Casey Weissburg, some rights reserved (CC BY-NC), uploaded by Casey Weissburg
- 75. (c) Trisha Shears, some rights reserved (CC BY-SA)
- 76. (c) Andy Jones, some rights reserved (CC BY-NC)
- 77. (c) leppyone, some rights reserved (CC BY)
- 78. (c) Martha de Jong-Lantink, some rights reserved (CC BY-NC-ND)
- 79. (c) Tim, some rights reserved (CC BY)
- 80. (c) Rafael Paredes Montesinos, some rights reserved (CC BY-NC), uploaded by Rafael Paredes Montesinos
- 81. (c) BJ Stacey, some rights reserved (CC BY-NC)
