Edited by Bart, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Jean-Raphaël Guillaumin, some rights reserved (CC BY-ND)
- 2. (c) Valter Jacinto, some rights reserved (CC BY-NC-SA)
- 3. (c) Emanuele Santarelli, some rights reserved (CC BY-SA), uploaded by Emanuele Santarelli
- 4. (c) Steve Daniels, some rights reserved (CC BY-NC), uploaded by Steve Daniels
- 5. no rights reserved, uploaded by Jesse Rorabaugh
- 6. (c) Antonio J. Pizarro Méndez, some rights reserved (CC BY-NC), uploaded by Antonio J. Pizarro Méndez
- 7. (c) Jakob Fahr, some rights reserved (CC BY-NC), uploaded by Jakob Fahr
- 8. (c) Bill & Mark Bell, some rights reserved (CC BY-NC-SA)
- 9. (c) Fabien Piednoir, some rights reserved (CC BY-SA), uploaded by Fabien Piednoir
- 10. (c) portioid, some rights reserved (CC BY-SA), uploaded by portioid
- 11. (c) Marcello Consolo, some rights reserved (CC BY-NC-SA)
- 12. (c) Kostas Zontanos, some rights reserved (CC BY-NC), uploaded by Kostas Zontanos
- 13. (c) tomvansichem, some rights reserved (CC BY-NC)
- 14. (c) Stanislav Krejčík, some rights reserved (CC BY)
- 15. (c) Mick Talbot, some rights reserved (CC BY)
- 16. (c) nagelhoutandre, some rights reserved (CC BY-NC), uploaded by nagelhoutandre
- 17. (c) Pascal Dubois, some rights reserved (CC BY-NC), uploaded by Pascal Dubois
- 18. (c) Pierre Bornand, some rights reserved (CC BY-NC)
- 19. (c) max09, some rights reserved (CC BY-NC), uploaded by max09
- 20. (c) Brecht De Causmaecker, some rights reserved (CC BY-NC-SA)
- 21. (c) Susannah Anderson, some rights reserved (CC BY-NC-ND)
- 22. (c) Michael Steinwandter, some rights reserved (CC BY-NC-ND), uploaded by Michael Steinwandter
- 23. (c) Jack Farley, some rights reserved (CC BY-NC), uploaded by Jack Farley
- 24. (c) Farhan Bokhari, some rights reserved (CC BY-NC-ND)
- 25. (c) Vijay Anand Ismavel, some rights reserved (CC BY-NC-SA)
- 26. (c) Ferran Turmo Gort, some rights reserved (CC BY-NC-SA)
- 27. (c) Miroslav Fiala, some rights reserved (CC BY-NC)
- 28. (c) Roman, some rights reserved (CC BY), uploaded by Roman
- 29. (c) Thomas Shahan, some rights reserved (CC BY-NC-ND)
- 30. no rights reserved, uploaded by Zygy
- 31. (c) Roman Providukhin, some rights reserved (CC BY-NC), uploaded by Roman Providukhin
- 32. (c) Lies Van Rompaey, some rights reserved (CC BY)
- 33. (c) Sequoia Janirella Wrens, some rights reserved (CC BY-NC), uploaded by Sequoia Janirella Wrens
- 34. (c) Philipp Wickey, all rights reserved, uploaded by Philipp Wickey
- 35. (c) Phlegra_fasciata_2.jpg, some rights reserved (CC BY)
- 36. (c) Nicolas Zwahlen, some rights reserved (CC BY-NC-SA), uploaded by Nicolas Zwahlen
- 37. (c) Pierre Anquet, some rights reserved (CC BY-NC-ND)
- 38. (c) Lukas Jonaitis, some rights reserved (CC BY)
- 39. (c) John Tann, some rights reserved (CC BY-NC)
- 40. (c) Tatiana Bulyonkova, some rights reserved (CC BY-NC-SA)
- 41. (c) Arthur Chapman, some rights reserved (CC BY-NC-SA)
- 42. (c) Katja Schulz, some rights reserved (CC BY)
- 43. (c) Joe Lapp, some rights reserved (CC BY-NC)
- 44. (c) Uriah Resheff, some rights reserved (CC BY-NC), uploaded by Uriah Resheff
- 45. (c) jorozko, some rights reserved (CC BY-NC-SA)
- 46. (c) Emili V. López Ãlvarez, some rights reserved (CC BY-NC-ND)
- 47. (c) Cedric Lee, some rights reserved (CC BY-NC), uploaded by Cedric Lee
- 48. (c) fabriziolanfredi, some rights reserved (CC BY-NC), uploaded by fabriziolanfredi
- 49. (c) IES MANUEL GARCÍA BARROS A ESTRADA - PONTEVEDRA, some rights reserved (CC BY-SA)
- 50. (c) Donald Hobern, some rights reserved (CC BY)
