Birds
- All About Birds(Cornell Lab of Ornithology) - for the bird watcher
- AvibaseThe World Bird Database
- Bird IdentificationFill out a form to identify a bird; emphasis on northeastern & central US & Canada
- Birds of North America OnlineAlso in paper SCIENCE QL681 .B625
- The Internet Bird CollectionThousands of videos of the world's birds
- Ornithology ExchangeAn online community forum of individuals and organizations interested in ornithology
- Xeno-canto: bird sounds from around the worldSearch through the growing collection, identify or discuss unknown sounds and download freely.
- SORA - Searchable Ornithological Research Archive This link opens in a new windowOpen Access ornithological publications archive
Surveys and Counts
- eBirdPremier citizen science database
- Bird Monitoring in North AmericaTrack changes in North American bird populations.
- Breeding Bird SurveyUSGS Patuxent Wildlife Research Center
- Check-list of North American Birds (AOU)Official source on the taxonomy of birds found in North and Middle America
- Christmas Bird Count100 + years of data from the National Audubon Society
- Partners in FlightIncludes databases: Species Assessment Database, and Population Estimates Database
- State of the World's BirdsBirdLife International
- U.S. Fish & Wildlife Service Migratory Bird ProgramSee the Surveys & Data link