Edited by Stephen Petersen, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Christopher Michel, some rights reserved (CC BY)
- 2. (c) joecf, some rights reserved (CC BY-NC-ND), uploaded by joecf
- 3. (c) Michael Webber, some rights reserved (CC BY-NC-SA)
- 4. (c) Matt, some rights reserved (CC BY-NC-SA)
- 5. (c) upupamartin, some rights reserved (CC BY-NC-ND), uploaded by upupamartin
- 6. (c) Jason Burrows, some rights reserved (CC BY-NC-ND)
- 7. (c) Paul Cools, some rights reserved (CC BY-NC), uploaded by Paul Cools
- 8. (c) davidcooksy, some rights reserved (CC BY-NC)
- 9. (c) Owen Strickland, some rights reserved (CC BY-NC), uploaded by Owen Strickland
- 10. (c) Keven Law, some rights reserved (CC BY-SA)
- 11. (c) Bering Land Bridge National Preserve, some rights reserved (CC BY)
- 12. (c) Erin, some rights reserved (CC BY-NC-ND)
- 13. (c) pfaucher, some rights reserved (CC BY-NC), uploaded by pfaucher
- 14. (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC), uploaded by Robin Gwen Agarwal
- 15. (c) Kingfisher, some rights reserved (CC BY-SA)
- 16. (c) noahgaines, some rights reserved (CC BY-NC), uploaded by noahgaines