Edited by Thomas Schreiter, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Udo Schmidt, some rights reserved (CC BY-SA)
- 2. (c) Dendroica cerulea, some rights reserved (CC BY)
- 3. (c) John, some rights reserved (CC BY-NC)
- 4. (c) Kristian Peters, some rights reserved (CC BY-NC-SA)
- 5. (c) Jon Sullivan, some rights reserved (CC BY)
- 6. (c) Steve Guttman, some rights reserved (CC BY-NC-ND)
- 7. (c) AnneTanne, some rights reserved (CC BY-NC)
- 8. (c) David Hofmann, some rights reserved (CC BY-NC-ND)
- 9. (c) George F Mayfield, some rights reserved (CC BY-SA)
- 10. (c) Eric Guimbard, some rights reserved (CC BY-NC-SA)
- 11. (c) Hermann Falkner, some rights reserved (CC BY-NC)
- 12. (c) Dorota (Dorothy), some rights reserved (CC BY-SA)
- 13. (c) BlueRidgeKitties, some rights reserved (CC BY-NC-SA)
- 14. (c) Matt Lavin, some rights reserved (CC BY)
- 15. (c) Peter Hanegraaf, some rights reserved (CC BY-NC-ND)
- 16. (c) beautifulcataya, some rights reserved (CC BY-NC-ND)
- 17. (c) Radio Tonreg, some rights reserved (CC BY)
- 18. (c) Steffen Ramsaier, some rights reserved (CC BY-NC-ND)
- 19. (c) zzzeroX Productions, some rights reserved (CC BY-NC-SA)
- 20. (c) Superior National Forest, some rights reserved (CC BY)
- 21. (c) Bastiaan, some rights reserved (CC BY-NC-ND)
- 22. (c) Anita, some rights reserved (CC BY-NC-SA)
- 23. (c) Phil Sellens, some rights reserved (CC BY)
- 24. (c) José María Escolano, some rights reserved (CC BY-NC-SA)
- 25. (c) Kingsbrae Garden, some rights reserved (CC BY-NC-SA)
- 26. (c) Salomé, some rights reserved (CC BY-NC-SA)
- 27. (c) Steve Chilton, some rights reserved (CC BY-NC-ND)
- 28. (c) M.M. R, some rights reserved (CC BY-NC)
- 29. (c) Jochen Pippir, some rights reserved (CC BY-NC-SA)
- 30. (c) Shihmei Barger 舒詩玫, some rights reserved (CC BY-NC-ND)
- 31. (c) Juha Haataja, some rights reserved (CC BY-NC-SA)
- 32. (c) Alwyn Ladell, some rights reserved (CC BY-NC-ND)