1. The Rufford Foundation http://www.rufford.org/

2. The Wildlife Society http://wildlife.org/

3. Rockefeller Foundation https://www.rockefellerfoundation.org/

4. The David and Lucile Packard Foundation https://www.packard.org/

5. Weeden Foundation http://www.weedenfdn.org/

6. Sigma Xi. The scientific research society https://www.sigmaxi.org/programs/grants-in-aid

7. John Templeton Foundation https://www.templeton.org/who-we-are

8. The Wolfson Foundation http://www.wolfson.org.uk/

9. US Wild Life Service https://www.fws.gov/grants/

10. Organization for tropical studies (OTS) http://www.ots.ac.cr

11. American Museum of Natural History, Frank M. Chapman Memorial Fund  http://www.amnh.org/our-research/vertebrate-zoology/ornithology/grants

12. American Museum of Natural History, Richard Gilder Graduate School http://www.amnh.org/our-research/richard-gilder-graduate-school/academics-and-research/fellowship-and-grant-opportunities/research-grants-and-student-exchange-fellowships

13. American Wildlife Research Foundation http://www.awcf1911.org

14. Bat Conservation International http://www.batcon.org

15. Center for Field Research (Earthwatch) http://earthwatch.org

16. Association of Field Ornithologists, E.A. Bergstrom Memorial Research Award  http://afonet.org/wp_english/grants-awards/bergstrom/

17. Beckman, Arnold and Mabel Foundation  http://www.beckman-foundation.org

18. Chicago Zoological Society, Conservation and Research Funds https://www.czs.org/Chicago-Zoological-Society/Conservation-Leadership/Animal-Care-and-Conservation-Fund

19. Danforth, Sophie Conservation Biology Fund  http://www.rwpzoo.org/142/sophie-danforth-conservation-biology-fund-grant-application-process

20. Explorers Club https://explorers.org

21. Hawk Migration Association of North America http://www.hmana.org

22. International Primatological Society, Conservation Training Grants  http://www.internationalprimatologicalsociety.org/conservation.cfm

23. Leakey, L.S.B. Foundation Grants https://leakeyfoundation.org/grants/research-grants/

24. Linnean Society, Percy Sladen Memorial Fund https://www.linnean.org/the-society/medals-awards-prizes-grants/percy-sladen-memorial-fund-grants

25. National Geographic Society http://www.nationalgeographic.com/explorers/grants-programs/cre-application/

26. PADI Foundation http://www.padifoundation.org/guides-deadlines.html

27. Rainforest Alliance, Kleinhans Fellowship for Research in Non-Timber Forest Products http://www.rainforest-alliance.org/fellowships

28. Rainforest Alliance http://www.rainforest-alliance.org

29. Third World Academy of Sciences, Grants for Scientific Meetings in Developing Countries http://twas.org/opportunities/research-grants

30. Oro Verde. Die tropenwaldstiftung http://www.regenwald-schuetzen.org/aktuelles.html

31. People's Trust for Endangered Species  https://ptes.org

32. World Wildlife Fund, Mexico http://www.wwf.org.mx

33. Wilson Ornithological Society http://www.wilsonsociety.org/wilsonsoc/

34. Western Bird Banding Research Grant  http://www.westernbirdbanding.org/index.html

35. Third World Academy of Sciences, Donation Programme http://twas.org/opportunities/research-grants

36. Raptor Research Foundation, Inc http://www.raptorresearchfoundation.org/grants-and-awards/