United States
American Bird Conservancy
A not-for-profit dedicated to the conservation of wild birds and their habitats in the Americas.
BBIRD - Breeding Biology Research and Monitoring Database
A national, cooperative program that uses standardized field methodologies for studies of nesting success and habitat requirements of breeding birds.
Bird Checklists of the United States
Hundreds of seasonal occurrence bird checklists for state, federal, and private management areas, nature preserves, and other areas of special interest in the United States.
Birds in Nature
Photographs of wild birds by Richard Ditch. Includes an extensive tutorial and information on many aspects of bird photography.
Birds: Bellwethers of Watershed Health
Educational resource on the importance of birds as watershed health indicators and how to improve watershed conditions.
Birdwatching in the National Parks
Links to articles and checklists for finding birds on National Park Service land throughout the US.
Identification Issues
Don Roberson's detailed discussions and photos of 10 ID problems, mainly dealing with California birds.
New England Seabirds and Pelagic Birding
Conservation news, checklists of birds and mammals, birding spots, pelagic trips and trip reports, seabird breeding colonies, and tips for a first pelagic trip.
Northern Prairie Wildlife Research Center
Large number of articles with detailed information about United States birds.
Nutty Birdwatcher
Eastern U.S. site with tips for backyard birding, bird migration table, and identification guides.
Robert Winkler - Nature Writing
Excerpts, reviews, bird photos, and links from the author of "Going Wild: Adventures with Birds in the Suburban Wilderness".
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