Edited by Diego Fernando Guillen, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Dario Sanches, some rights reserved (CC BY-SA)
- 2. (c) Josh Vandermeulen, some rights reserved (CC BY-NC-ND), uploaded by Josh Vandermeulen
- 3. (c) Nicolas Olejnik, some rights reserved (CC BY-NC), uploaded by Nicolas Olejnik
- 4. (c) barloventomagico, some rights reserved (CC BY-NC-ND)
- 5. (c) Tude e João, some rights reserved (CC BY-NC-SA)
- 6. (c) Leonel Roget, some rights reserved (CC BY), uploaded by Leonel Roget
- 7. (c) Laura Gooch, some rights reserved (CC BY-NC-SA)
- 8. (c) João Vitor Andriola, some rights reserved (CC BY-NC), uploaded by João Vitor Andriola
- 9. (c) Dominic Sherony, some rights reserved (CC BY-SA)
- 10. (c) Vincent A. Vos, some rights reserved (CC BY), uploaded by Vincent A. Vos
- 11. (c) Cullen Hanks, some rights reserved (CC BY-NC), uploaded by Cullen Hanks
- 12. (c) C Yasuda, some rights reserved (CC BY-NC), uploaded by C Yasuda
- 13. (c) Muchaxo, some rights reserved (CC BY-NC-ND)
- 14. (c) Mateo Hernandez Schmidt, some rights reserved (CC BY-NC-SA), uploaded by Mateo Hernandez Schmidt
- 15. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 16. (c) Cláudio Dias Timm, some rights reserved (CC BY-NC-SA)
- 17. (c) Victor W Fazio III, some rights reserved (CC BY-NC-ND), uploaded by Victor W Fazio III
- 18. (c) https://www.flickr.com/photos/jquental, some rights reserved (CC BY)
- 19. (c) JerryFriedman, some rights reserved (CC BY-SA)
- 20. (c) guyincognito, some rights reserved (CC BY-NC), uploaded by guyincognito
- 21. (c) Kelly Colgan Azar, some rights reserved (CC BY-ND)
- 22. (c) Mark Dennis, some rights reserved (CC BY-NC), uploaded by Mark Dennis
- 23. (c) BJ Stacey, some rights reserved (CC BY-NC)
- 24. (c) Len Blumin, some rights reserved (CC BY-NC-ND)
- 25. (c) Steven Easley, some rights reserved (CC BY-NC), uploaded by Steven Easley
- 26. (c) davy, some rights reserved (CC BY-NC), uploaded by davy
- 27. (c) Carmelo López Abad, some rights reserved (CC BY-NC), uploaded by Carmelo López Abad
- 28. (c) Feroze Omardeen, some rights reserved (CC BY)
- 29. (c) Juan Carlos Pérez Magaña, some rights reserved (CC BY-NC), uploaded by Juan Carlos Pérez Magaña
- 30. no rights reserved, uploaded by Diego Carús
- 31. (c) David Cook, some rights reserved (CC BY-NC)
- 32. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 33. (c) Leslie Flint, some rights reserved (CC BY-NC), uploaded by Leslie Flint
- 34. (c) Steve Garvie, some rights reserved (CC BY-NC-SA)
- 35. (c) Lip Kee Yap, some rights reserved (CC BY-SA)
- 36. (c) manuelfernando, some rights reserved (CC BY-NC-ND), uploaded by manuelfernando
- 37. (c) dushenkov, some rights reserved (CC BY-NC)
- 38. (c) Erick Noe Tapia Banda, some rights reserved (CC BY-NC), uploaded by Erick Noe Tapia Banda
- 39. (c) Roland Kratzer, some rights reserved (CC BY-NC-SA)
- 40. (c) Ken Schneider, some rights reserved (CC BY-NC), uploaded by Ken Schneider
- 41. (c) Michael, some rights reserved (CC BY-NC-SA)
- 42. (c) Vishal Patel, some rights reserved (CC BY-NC-ND)
- 43. (c) Scott Bowers, some rights reserved (CC BY-NC), uploaded by Scott Bowers
- 44. (c) Gabriel Leite, some rights reserved (CC BY-NC), uploaded by Gabriel Leite
- 45. (c) Lee Cain, some rights reserved (CC BY), uploaded by Lee Cain
- 46. (c) Don Faulkner, some rights reserved (CC BY-SA)
- 47. (c) Francesco Veronesi, some rights reserved (CC BY-NC-SA)
- 48. (c) Javi Gonzalez, some rights reserved (CC BY-NC), uploaded by Javi Gonzalez
- 49. (c) Jon McIntyre, some rights reserved (CC BY-NC), uploaded by Jon McIntyre
- 50. (c) Félix Uribe, some rights reserved (CC BY)