Archives of the Hawk Migration Association of North America e-mail group.

A reference series on North American birds, with information and sample profiles.

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.

Frequently asked questions, birding tips, articles, and store.

Archives of the e-mail group for western US/Canada rare bird alerts.

Sightings, newsletter, articles, species profiles including the complete text of Bent's Life Histories, bird lists, photos, backyard birding, and shopping.

Dedicated to educating birdwatchers and naturalists about the importance of the boreal forest of North America to migratory birds.

A membership institution interpreting and conserving the earth's biological diversity through research, education, and citizen science focused on birds.

Species accounts of North American birds, including images, descriptions, and sounds.

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).