Joint project of National Audubon and the Cornell Lab of Ornithology with the complete Christmas Bird Count database, Project FeederWatch, BirdCast, HawkWatch results, Great Backyard Bird Count, and feature articles.
Sightings, newsletter, articles, species profiles including the complete text of Bent's Life Histories, bird lists, photos, backyard birding, and shopping.
A membership institution interpreting and conserving the earth's biological diversity through research, education, and citizen science focused on birds.
Full text of some of the species accounts of more common birds by Arthur Cleveland Bent from his classic Life Histories of North American Birds (1919-1968).