Edited by Minnesota Scientific and Natural Areas, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) peupleloup, some rights reserved (CC BY-SA)
- 2. (c) Josh*m, some rights reserved (CC BY-NC-SA)
- 3. (c) Jean-Marc, some rights reserved (CC BY-NC), uploaded by Jean-Marc
- 4. (c) Mathew Zappa, some rights reserved (CC BY), uploaded by Mathew Zappa
- 5. (c) Salomé, some rights reserved (CC BY-NC-SA)
- 6. (c) lvconrad1977, some rights reserved (CC BY-NC), uploaded by lvconrad1977
- 7. (c) Anita363, some rights reserved (CC BY-NC-SA), uploaded by Anita363
- 8. (c) zen Sutherland, some rights reserved (CC BY-NC-SA)
- 9. (c) Leo Papandreou, some rights reserved (CC BY-NC-SA)
- 10. (c) mmwm, some rights reserved (CC BY-NC-ND)
- 11. (c) Sam Kieschnick, some rights reserved (CC BY), uploaded by Sam Kieschnick
- 12. (c) Lena Dietz Chiasson, some rights reserved (CC BY-NC), uploaded by Lena Dietz Chiasson
- 13. (c) Michael Ellis, some rights reserved (CC BY), uploaded by Michael Ellis
- 14. (c) Amadej Trnkoczy, some rights reserved (CC BY-NC-SA)
- 15. (c) seabrookeleckie, some rights reserved (CC BY-NC), uploaded by seabrookeleckie
- 16. (c) dogtooth77, some rights reserved (CC BY-NC-SA)
- 17. (c) David Greenberger, some rights reserved (CC BY-NC-ND), uploaded by David Greenberger