Edited by Sara L Giles, some rights reserved (CC0)
Photo Credits
- 1. no rights reserved, uploaded by Dario Taraborelli
- 2. (c) Blake Matheson, some rights reserved (CC BY-NC)
- 3. (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC), uploaded by Robin Gwen Agarwal
- 4. (c) Oscar Johnson, some rights reserved (CC BY-NC-ND), uploaded by Oscar Johnson
- 5. (c) Wayne Fidler, some rights reserved (CC BY-NC), uploaded by Wayne Fidler
- 6. (c) Matt K, some rights reserved (CC BY-NC), uploaded by Matt K
- 7. (c) Francesco Veronesi, some rights reserved (CC BY-SA)
- 8. (c) Casey Weissburg, some rights reserved (CC BY-NC), uploaded by Casey Weissburg
- 9. (c) Sue Wetmore, some rights reserved (CC BY-NC), uploaded by Sue Wetmore
- 10. (c) Andrew Reding, some rights reserved (CC BY-NC-ND)
- 11. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
- 12. (c) lemurtaquin, some rights reserved (CC BY-NC), uploaded by lemurtaquin
- 13. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 14. (c) Paul Reeves, some rights reserved (CC BY-NC-SA), uploaded by Paul Reeves
- 15. (c) Andrew Cannizzaro, some rights reserved (CC BY)
- 16. (c) Hannah Floyd, some rights reserved (CC BY-NC), uploaded by Hannah Floyd
- 17. (c) José Antonio Linage Espinosa, some rights reserved (CC BY-NC), uploaded by José Antonio Linage Espinosa
- 18. (c) John D Reynolds, some rights reserved (CC BY-NC), uploaded by John D Reynolds
- 19. (c) Pablo Balduvino, some rights reserved (CC BY-NC), uploaded by Pablo Balduvino
- 20. (c) U.S. Fish and Wildlife Service Northeast Region, some rights reserved (CC BY)
- 21. (c) Mike Hannisian, some rights reserved (CC BY-NC), uploaded by Mike Hannisian
- 22. (c) Jacob Collison, some rights reserved (CC BY-NC), uploaded by Jacob Collison
- 23. (c) coleen61, some rights reserved (CC BY-NC)
- 24. (c) Magnus Lindberg - Close to nature, some rights reserved (CC BY-NC-ND)
- 25. (c) kha, some rights reserved (CC BY-NC), uploaded by kha
- 26. (c) Len Blumin, some rights reserved (CC BY)
- 27. (c) Tommy Farquhar, some rights reserved (CC BY-NC), uploaded by Tommy Farquhar
- 28. (c) TexasEagle, some rights reserved (CC BY-NC)
- 29. (c) Craig K. Hunt, some rights reserved (CC BY-NC-ND), uploaded by Craig K. Hunt
- 30. (c) Kentish Plumber, some rights reserved (CC BY-NC-ND)
- 31. (c) Александр Васильев, some rights reserved (CC BY-NC), uploaded by Александр Васильев
- 32. (c) Liz Osborn, some rights reserved (CC BY-NC), uploaded by Liz Osborn
- 33. (c) Carlos Delgado, some rights reserved (CC BY-SA)
- 34. (c) Jonathan Eisen, some rights reserved (CC BY), uploaded by Jonathan Eisen
- 35. (c) BJ Stacey, some rights reserved (CC BY-NC)
- 36. (c) Maggie.Smith, some rights reserved (CC BY-NC)
- 37. (c) world_lineage, some rights reserved (CC BY-NC), uploaded by world_lineage
- 38. (c) Mark Peck, some rights reserved (CC BY-NC-SA)
- 39. (c) Kirstyn Eckhardt, all rights reserved, uploaded by Kirstyn Eckhardt
- 40. (c) andriy, some rights reserved (CC BY-NC), uploaded by andriy
- 41. (c) Dan Roach, some rights reserved (CC BY-NC), uploaded by Dan Roach
- 42. no rights reserved, uploaded by Kyle Nessen
- 43. (c) Mikael Behrens, some rights reserved (CC BY-NC), uploaded by Mikael Behrens
- 44. (c) BJ Stacey, some rights reserved (CC BY-NC), uploaded by BJ Stacey
- 45. (c) Mike Mosser, some rights reserved (CC BY-NC), uploaded by Mike Mosser
- 46. (c) Steven McGrath, some rights reserved (CC BY-NC), uploaded by Steven McGrath
- 47. (c) Иван Матершев, some rights reserved (CC BY-NC), uploaded by Иван Матершев
- 48. (c) Jim Johnson, some rights reserved (CC BY-NC-ND), uploaded by Jim Johnson
- 49. (c) Rick Leche - Photography, some rights reserved (CC BY-NC)
- 50. (c) Richard Wottrich, some rights reserved (CC BY-NC), uploaded by Richard Wottrich
- 51. (c) Tracey Fandre, some rights reserved (CC BY-NC-ND), uploaded by Tracey Fandre
- 52. (c) David McCorquodale, some rights reserved (CC BY), uploaded by David McCorquodale
- 53. (c) fiddleman, some rights reserved (CC BY-NC), uploaded by fiddleman
- 54. (c) belyykit, some rights reserved (CC BY-NC), uploaded by belyykit
- 55. (c) Dominic Sherony, some rights reserved (CC BY-SA)
- 56. (c) gbudyk, some rights reserved (CC BY-NC-ND), uploaded by gbudyk
- 57. (c) anonymous, some rights reserved (CC BY-SA)
- 58. (c) Brendan Lally, some rights reserved (CC BY)
- 59. (c) frankf, some rights reserved (CC BY-NC)
- 60. (c) Alexey Zyryanov, some rights reserved (CC BY-NC), uploaded by Alexey Zyryanov
- 61. (c) Judy Gallagher, some rights reserved (CC BY)
- 62. (c) Ad Konings, some rights reserved (CC BY-NC), uploaded by Ad Konings
- 63. (c) Bill Blauvelt, some rights reserved (CC BY-NC), uploaded by Bill Blauvelt
- 64. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 65. (c) edoswalt, some rights reserved (CC BY-NC), uploaded by edoswalt
- 66. (c) Olaf Oliviero Riemer, some rights reserved (CC BY-SA)
- 67. (c) Ashley M Bradford, some rights reserved (CC BY-NC), uploaded by Ashley M Bradford
- 68. (c) Антон Виноградов, some rights reserved (CC BY-NC), uploaded by Антон Виноградов
- 69. (c) Vyacheslav Luzanov, some rights reserved (CC BY-NC), uploaded by Vyacheslav Luzanov
- 70. (c) Kyle Tansley, some rights reserved (CC BY-NC), uploaded by Kyle Tansley
- 71. (c) Илья Сухов, some rights reserved (CC BY-NC), uploaded by Илья Сухов
- 72. (c) Bird Explorers, some rights reserved (CC BY-NC), uploaded by Bird Explorers
- 73. (c) arbyreed, some rights reserved (CC BY-NC-SA)
- 74. (c) Joe McKenna, some rights reserved (CC BY-NC)
- 75. (c) Ralf Nowak, some rights reserved (CC BY-NC-SA)
- 76. (c) pinemartyn, some rights reserved (CC BY-NC), uploaded by pinemartyn
- 77. (c) Jen Goellnitz, some rights reserved (CC BY-NC)
- 78. (c) Kelly Colgan Azar, some rights reserved (CC BY-ND)
- 79. (c) Cephas, some rights reserved (CC BY-SA)
- 80. (c) Blake Ross, some rights reserved (CC BY), uploaded by Blake Ross
- 81. (c) uzun, some rights reserved (CC BY-NC), uploaded by uzun
- 82. (c) Jack Cochran, some rights reserved (CC BY-NC), uploaded by Jack Cochran
- 83. Shenandoah National Park, no known copyright restrictions (public domain)
- 84. (c) Tom Murray, some rights reserved (CC BY-NC)
- 85. (c) Kristi, some rights reserved (CC BY-NC-SA)
- 86. (c) Elizabeth Olan Palma, some rights reserved (CC BY-NC), uploaded by Elizabeth Olan Palma