Edited by Colorado Parks and Wildlife, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Carlos Sanchez, some rights reserved (CC BY-NC), uploaded by Carlos Sanchez
- 2. (c) Casey Weissburg, some rights reserved (CC BY-NC), uploaded by Casey Weissburg
- 3. (c) jefferykarafa, some rights reserved (CC BY-NC), uploaded by jefferykarafa
- 4. (c) Tom Murray, some rights reserved (CC BY-NC)
- 5. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 6. (c) Dmitry Mozzherin, some rights reserved (CC BY-NC-SA)
- 7. (c) Doug Greenberg, some rights reserved (CC BY-NC-ND)
- 8. (c) Alan R. Biggs, some rights reserved (CC BY-NC-ND), uploaded by Alan R. Biggs
- 9. (c) James Bailey, some rights reserved (CC BY-NC), uploaded by James Bailey
- 10. (c) Nature Ali, some rights reserved (CC BY-NC-ND), uploaded by Nature Ali
- 11. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 12. (c) rbbrummitt, some rights reserved (CC BY-NC), uploaded by rbbrummitt
- 13. (c) Mike Leveille, some rights reserved (CC BY-NC), uploaded by Mike Leveille
- 14. (c) Gavan Watson, some rights reserved (CC BY-NC-SA)
- 15. (c) Christian Artuso, some rights reserved (CC BY-NC-ND), uploaded by Christian Artuso
- 16. (c) Michael Hodge, some rights reserved (CC BY-NC-SA)
- 17. no rights reserved, uploaded by Kyle Nessen
- 18. (c) Gordon Karre, some rights reserved (CC BY-NC), uploaded by Gordon Karre
- 19. (c) Carlos Martínez-Chamorro, some rights reserved (CC BY-NC-SA), uploaded by Carlos Martínez-Chamorro
- 20. (c) kennybenge, some rights reserved (CC BY-NC)
- 21. (c) Minette, some rights reserved (CC BY-NC)
- 22. (c) Rick Leche, some rights reserved (CC BY-NC-ND)
- 23. (c) Sergey Yeliseev, some rights reserved (CC BY-NC-ND)
- 24. (c) Алина Боксорн, some rights reserved (CC BY-NC), uploaded by Алина Боксорн
- 25. (c) dhandler1968, some rights reserved (CC BY-NC)
- 26. (c) naturpel, some rights reserved (CC BY-NC), uploaded by naturpel
- 27. (c) Rick Leche - Photography, some rights reserved (CC BY-NC-ND)
- 28. (c) Juan Emilio, some rights reserved (CC BY-SA)
- 29. (c) Kentish Plumber, some rights reserved (CC BY-NC-ND)
- 30. (c) tnewman, some rights reserved (CC BY-NC)
- 31. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
- 32. (c) Mike Baird, some rights reserved (CC BY)
- 33. (c) Blake Matheson, some rights reserved (CC BY-NC)
- 34. (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC), uploaded by Robin Gwen Agarwal
- 35. (c) uzun, some rights reserved (CC BY-NC), uploaded by uzun
- 36. (c) Sasata, some rights reserved (CC BY-SA)
- 37. (c) Maggie.Smith, some rights reserved (CC BY-NC)
- 38. (c) Scott Buckel, some rights reserved (CC BY-NC), uploaded by Scott Buckel
- 39. (c) Andrej Chudý, some rights reserved (CC BY-NC-SA)
- 40. (c) Tom Benson, some rights reserved (CC BY-NC-ND)
- 41. (c) Ron Knight, some rights reserved (CC BY)
- 42. (c) Cloudtail the Snow Leopard, some rights reserved (CC BY-NC-ND)
- 43. (c) Justyn Stahl, some rights reserved (CC BY-NC), uploaded by Justyn Stahl
- 44. (c) Julien Renoult, some rights reserved (CC BY), uploaded by Julien Renoult
- 45. (c) Per Verdonk, some rights reserved (CC BY-NC)
- 46. (c) Tim Giller, some rights reserved (CC BY-NC), uploaded by Tim Giller
- 47. (c) Bert Kaufmann, some rights reserved (CC BY-NC)
- 48. (c) 116916927065934112165, some rights reserved (CC BY), uploaded by 116916927065934112165
- 49. (c) Paul Reeves, some rights reserved (CC BY-NC-SA), uploaded by Paul Reeves
- 50. (c) Jamie Chavez, some rights reserved (CC BY-NC)
- 51. (c) Dan Pancamo, some rights reserved (CC BY-SA)
- 52. (c) Ross Millikan, some rights reserved (CC BY-NC), uploaded by Ross Millikan
- 53. (c) Paul Cools, some rights reserved (CC BY-NC), uploaded by Paul Cools
- 54. (c) cyric, some rights reserved (CC BY-NC-SA), uploaded by cyric
- 55. (c) José Antonio Linage Espinosa, some rights reserved (CC BY-NC), uploaded by José Antonio Linage Espinosa
- 56. (c) Alex J Burchard, some rights reserved (CC BY-NC), uploaded by Alex J Burchard
- 57. (c) U.S. Fish and Wildlife Service Northeast Region, some rights reserved (CC BY)
- 58. (c) Len Blumin, some rights reserved (CC BY-NC-ND)
- 59. (c) Bridget Spencer, some rights reserved (CC BY-NC), uploaded by Bridget Spencer
- 60. (c) Mike Hannisian, some rights reserved (CC BY-NC), uploaded by Mike Hannisian
- 61. (c) BJ Stacey, some rights reserved (CC BY-NC)
- 62. (c) roy pilcher, some rights reserved (CC BY-NC), uploaded by roy pilcher
- 63. (c) dominic sherony, some rights reserved (CC BY-SA)
- 64. (c) Kenneth Cole Schneider, some rights reserved (CC BY-NC-SA)
- 65. (c) Frans Vandewalle, some rights reserved (CC BY-NC)
- 66. (c) Jack Wolf, some rights reserved (CC BY-NC-ND)
- 67. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 68. (c) Ómar Runólfsson, some rights reserved (CC BY)
- 69. (c) Marv Elliott, some rights reserved (CC BY-NC), uploaded by Marv Elliott
- 70. (c) Ekaterina Chernetsova (Papchinskaya), some rights reserved (CC BY)
- 71. (c) Roger Debenham, some rights reserved (CC BY-NC), uploaded by Roger Debenham
- 72. (c) docentjoyce, some rights reserved (CC BY)
- 73. (c) Gary Ashley, some rights reserved (CC BY-NC)
- 74. (c) Andrew, some rights reserved (CC BY-NC)
- 75. (c) M. Goff, some rights reserved (CC BY-NC-SA), uploaded by M. Goff
- 76. (c) Roger Butterfield, some rights reserved (CC BY-NC-SA)
- 77. (c) Herman Mays, some rights reserved (CC BY-NC-SA)