2. Cornell Lab of Ornithology—Home | Birds, Cornell Lab of Ornithology : Birds, Cornell Lab of Ornithology
3. eBird – Discover a new world of birding…
4. AVoCet : Avian Vocalization Center (msu.edu)
5. Searchable Ornithological Research Archive | The University of New Mexico (unm.edu)
6. All birds on bird-sounds.net
7. Introducing the Bird Chromosome Database: An Overview of Cytogenetic Studies in Birds – PubMed (nih.gov)
8. Freesound – sound search
9. Species lists and databases – INHS Bird Collection (illinois.edu)
10. 50 Bird Species and the Sounds They Make (aaastateofplay.com)
11. Birds – Ecology Explorers (asu.edu)
12. U.S. Fish & Wildlife Service – Migratory Bird Program | Conserving America’s Birds (fws.gov)
13. Birds of Orange County, California (uci.edu)
14. Oklahoma Breeding Bird Atlas – Sutton Center
15. State of the Birds 2019
16. Macaulay Library – A scientific archive for research, education, and conservation, powered by you
17. WhatBird | identify birds | bird identification guide | north america
18. NMOS Database Overview (unm.edu)
19. Birds of Iowa (iowabirds.org)
20. Mapping bird migration | UDaily (udel.edu)
21. Our wildlife sound archive – CSIRO
22. Explore the birds of Tennessee! (tn.gov)
23. How to Identify Birds by Sounds | Audubon
24. Guide to North American Birds | Audubon
25. Identify garden birds | The Wildlife Trusts
26. Birds Canada | Oiseaux Canada |
27. American Bird Conservancy: 25 Years of Bird Conservation Results (abcbirds.org)
28. Most Common Backyard Birds (thespruce.com)
29. Bird Identification Guide » Bird Watcher’s Digest (birdwatchersdigest.com)
30. List of birds of Africa – Wikipedia
31. List of birds of South Africa – Wikipedia
32. List of birds of Asia – Wikipedia
33. List of birds of Europe – Wikipedia
34. List of birds of Australia, New Zealand and Antarctica – Wikipedia
35. List of birds of Canada – Wikipedia
36. List of birds of New Mexico – Wikipedia
37. List of birds of the United States – Wikipedia
38. List of birds of Ireland – Wikipedia
39. List of birds of Germany – Wikipedia
40. List of birds of New Zealand – Wikipedia
