Edited by Benjamin Koser, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) SMBishop, some rights reserved (CC BY-SA)
- 2. no rights reserved
- 3. (c) Marlo Perdicas, some rights reserved (CC BY), uploaded by Marlo Perdicas
- 4. (c) Jason Whittle, some rights reserved (CC BY-NC-ND), uploaded by Jason Whittle
- 5. (c) Juan Cruzado Cortés, some rights reserved (CC BY-SA), uploaded by Juan Cruzado Cortés
- 6. (c) Eric Soehren, some rights reserved (CC BY-NC), uploaded by Eric Soehren
- 7. (c) Matthew O'Donnell, some rights reserved (CC BY-NC-SA)
- 8. (c) Juan Cruzado, some rights reserved (CC BY-SA), uploaded by Juan Cruzado
- 9. (c) tom spinker, some rights reserved (CC BY-NC-ND)
- 10. (c) adamdv18, some rights reserved (CC BY-NC)
- 11. (c) Erin, some rights reserved (CC BY-NC-ND)
- 12. (c) Bering Land Bridge National Preserve, some rights reserved (CC BY)
- 13. (c) davidcooksy, some rights reserved (CC BY-NC)
- 14. (c) Dan Dzurisin, some rights reserved (CC BY)
- 15. (c) Phil Warren, some rights reserved (CC BY-NC), uploaded by Phil Warren
- 16. (c) Don McCullough, some rights reserved (CC BY-NC)
- 17. (c) Ott Rebane, some rights reserved (CC BY)
- 18. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 19. (c) Hal Trachtenberg, some rights reserved (CC BY-NC)
- 20. (c) Tanner Senti, some rights reserved (CC BY-NC), uploaded by Tanner Senti
- 21. (c) Nick Tepper, some rights reserved (CC BY-NC), uploaded by Nick Tepper
- 22. (c) Helen A. Czech, some rights reserved (CC BY-NC), uploaded by Helen A. Czech
- 23. (c) Dave Govoni, some rights reserved (CC BY-NC-SA)
- 24. (c) Rob Curtis, some rights reserved (CC BY-NC-SA), uploaded by Rob Curtis