Edited by Minnesota Scientific and Natural Areas, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) andriy, some rights reserved (CC BY-NC), uploaded by andriy
- 2. (c) Glen Peterson, some rights reserved (CC BY-NC-SA)
- 3. (c) Dan Pancamo, some rights reserved (CC BY-SA)
- 4. (c) Eric Heupel, some rights reserved (CC BY-NC)
- 5. (c) Andy Jones, some rights reserved (CC BY-NC)
- 6. (c) Robin Horn, some rights reserved (CC BY-NC-ND)
- 7. (c) Ralf Nowak, some rights reserved (CC BY-NC-SA)
- 8. (c) Alan Vernon, some rights reserved (CC BY-NC-SA)
- 9. (c) Victor Fazio, some rights reserved (CC BY-NC-SA)
- 10. (c) arbyreed, some rights reserved (CC BY-NC-SA)
- 11. (c) Michael, some rights reserved (CC BY-NC-SA)
- 12. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 13. (c) Laura Gooch, some rights reserved (CC BY-NC-SA)
- 14. (c) Tom Benson, some rights reserved (CC BY-NC-ND)
- 15. (c) Jean-Guy Dallaire, some rights reserved (CC BY-NC-ND)
- 16. (c) guyincognito, some rights reserved (CC BY-NC), uploaded by guyincognito
- 17. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 18. (c) Jamie Chavez, some rights reserved (CC BY-NC)
- 19. (c) Jeff Skrentny, some rights reserved (CC BY-NC), uploaded by Jeff Skrentny
- 20. (c) U.S. Fish and Wildlife Service Northeast Region, some rights reserved ()