Edited by Renata Leite Pitman, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) JR P, some rights reserved (CC BY-NC)
- 2. (c) Lee Elliott, some rights reserved (CC BY-NC-SA), uploaded by Lee Elliott
- 3. (c) Lauren Glevanik, some rights reserved (CC BY-NC), uploaded by Lauren Glevanik
- 4. (c) AnneTanne, some rights reserved (CC BY-NC-SA)
- 5. (c) Marylise Doctrinal, some rights reserved (CC BY-NC-ND)
- 6. (c) Rafael Muxiven, some rights reserved (CC BY-NC)
- 7. (c) Joe Walewski, some rights reserved (CC BY-NC), uploaded by Joe Walewski
- 8. (c) dogtooth77, some rights reserved (CC BY-NC-SA)
- 9. (c) AnneTanne, some rights reserved (CC BY-NC)
- 10. (c) cecilia1995, some rights reserved (CC BY-NC), uploaded by cecilia1995
- 11. (c) Richard Reynolds, some rights reserved (CC BY-NC), uploaded by Richard Reynolds
- 12. (c) Patrick Coin, some rights reserved (CC BY-NC-SA)
- 13. no rights reserved
- 14. (c) Sara Rall, some rights reserved (CC BY-NC), uploaded by Sara Rall
- 15. (c) Ron Marusak, some rights reserved (CC BY-NC), uploaded by Ron Marusak
- 16. (c) John Baur, some rights reserved (CC BY), uploaded by John Baur
- 17. (c) Erutuon, some rights reserved (CC BY-SA)
- 18. (c) peggyo, some rights reserved (CC BY-NC), uploaded by peggyo
- 19. (c) Sherry Nigro, some rights reserved (CC BY-NC), uploaded by Sherry Nigro
- 20. (c) Dan Mullen, some rights reserved (CC BY-NC-ND)
- 21. (c) Bob Romero, some rights reserved (CC BY-NC), uploaded by Bob Romero
- 22. (c) Kristin Jones, some rights reserved (CC BY-NC), uploaded by Kristin Jones
- 23. (c) Matthew O'Donnell, some rights reserved (CC BY-NC-SA), uploaded by Matthew O'Donnell
- 24. (c) Jean-Pol GRANDMONT, some rights reserved (CC BY-SA)
- 25. (c) Nathan Taylor, some rights reserved (CC BY-NC), uploaded by Nathan Taylor
- 26. (c) Mary PK Burns, some rights reserved (CC BY-NC)
- 27. (c) Steven Severinghaus, some rights reserved (CC BY-NC-SA)
- 28. (c) Leonora Enking, some rights reserved (CC BY-SA)
- 29. (c) Douglas Goldman, some rights reserved (CC BY), uploaded by Douglas Goldman
- 30. (c) Bob Gutowski, some rights reserved (CC BY-NC-SA)
- 31. (c) Cody Hough, some rights reserved (CC BY-NC-SA)
- 32. (c) Joshua Reynolds, some rights reserved (CC BY-NC), uploaded by Joshua Reynolds
- 33. (c) snapshotswithsheila, some rights reserved (CC BY-NC), uploaded by snapshotswithsheila
- 34. (c) Benny Mazur, some rights reserved (CC BY)
- 35. (c) Dave Scamardella, some rights reserved (CC BY-NC), uploaded by Dave Scamardella
- 36. (c) Jason Sturner, some rights reserved (CC BY)
- 37. (c) Erika Mitchell, some rights reserved (CC BY-NC), uploaded by Erika Mitchell
- 38. (c) Owen Clarkin, some rights reserved (CC BY-NC), uploaded by Owen Clarkin
- 39. (c) Keith Kanoti, Maine Forest Service, USA, some rights reserved (CC BY)
- 40. (c) Michael Rayner, some rights reserved (CC BY-NC), uploaded by Michael Rayner
- 41. (c) JanetandPhil, some rights reserved (CC BY-NC-ND)
- 42. (c) noramunro, some rights reserved (CC BY-NC-ND)
- 43. (c) Shihmei Barger 舒詩玫, some rights reserved (CC BY-NC-ND)
- 44. (c) Will Van Hemessen, some rights reserved (CC BY-NC), uploaded by Will Van Hemessen
- 45. (c) Sean Blaney, some rights reserved (CC BY-NC), uploaded by Sean Blaney
- 46. (c) Danny Barron, some rights reserved (CC BY-NC-ND)
- 47. (c) Kingsbrae Garden, some rights reserved (CC BY-NC-SA)
- 48. (c) Doug Waylett, some rights reserved (CC BY)
- 49. (c) Brad Walker, some rights reserved (CC BY-NC), uploaded by Brad Walker
- 50. (c) Joseph D Kurtz, some rights reserved (CC BY-NC), uploaded by Joseph D Kurtz
- 51. (c) Willow, some rights reserved (CC BY-SA)
- 52. (c) Jenna Braun, some rights reserved (CC BY-NC), uploaded by Jenna Braun
- 53. (c) Matt Lavin, some rights reserved (CC BY-SA)
- 54. (c) Laura and Thomas Marlowe, some rights reserved (CC BY-NC), uploaded by Laura and Thomas Marlowe
- 55. (c) Charlie Hohn, some rights reserved (CC BY), uploaded by Charlie Hohn
- 56. (c) José María Escolano, some rights reserved (CC BY-NC-SA)
- 57. (c) Dwayne Estes, some rights reserved (CC BY-NC), uploaded by Dwayne Estes
- 58. (c) botanygirl, some rights reserved (CC BY), uploaded by botanygirl
- 59. (c) jlmason, some rights reserved (CC BY-NC), uploaded by jlmason
- 60. (c) Wendell Smith, some rights reserved (CC BY)
- 61. (c) Annkatrin Rose, some rights reserved (CC BY-NC-SA)
- 62. (c) Himanshu Sarpotdar, some rights reserved (CC BY-NC-ND)
- 63. (c) Paul van de Velde, some rights reserved (CC BY)
- 64. (c) Franco Folini, some rights reserved (CC BY-SA)
- 65. (c) Daniel Cahen, some rights reserved (CC BY), uploaded by Daniel Cahen
- 66. (c) Dawn Endico, some rights reserved (CC BY-SA)
- 67. (c) Kostas Zontanos, some rights reserved (CC BY-NC), uploaded by Kostas Zontanos
- 68. (c) sentraevant, some rights reserved (CC BY-NC), uploaded by sentraevant
- 69. (c) Chuck Sexton, some rights reserved (CC BY-NC), uploaded by Chuck Sexton
- 70. (c) Salomé, some rights reserved (CC BY-NC-SA)
- 71. (c) Sander Bos, some rights reserved (CC BY-NC-ND)
- 72. (c) Bill Bouton, some rights reserved (CC BY-SA)
- 73. (c) Mark Warman, some rights reserved (CC BY-NC), uploaded by Mark Warman
- 74. (c) sehnature, some rights reserved (CC BY-NC)
- 75. (c) Bastiaan, some rights reserved (CC BY-NC-ND)
- 76. (c) Kari Pihlaviita, some rights reserved (CC BY-NC)
- 77. (c) Phil, some rights reserved (CC BY-NC-ND)
- 78. (c) Ana Albertos, some rights reserved (CC BY-NC), uploaded by Ana Albertos
- 79. (c) Andy Fyon, some rights reserved (CC BY-NC), uploaded by Andy Fyon
- 80. (c) Andreas Rockstein, some rights reserved (CC BY-SA)
- 81. (c) Sarah, some rights reserved (CC BY-SA)