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.
http://pica.wru.umt.edu/BBIRD/

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.
http://www.neseabirds.com/

Nutty Birdwatcher

Eastern U.S. site with tips for backyard birding, bird migration table, and identification guides.
http://nuthatch.birdnature.com/

BirdWatch

PBS television series on birds and birdwatching.
http://www.pbs.org/birdwatch/

Birding Tidbits

Crossword puzzles.
http://home.epsb.net/~slivings/

All Experts Birding

A panel of US birders volunteer to answer questions.
http://www.allexperts.com/getExpert.asp?Category=1435

State Birds

Official birds for each US state with illustrations and descriptive text by Audubon.
http://www.50states.com/bird/

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.
http://www.npwrc.usgs.gov/resource/othrdata/chekbird/chekbird.htm

State Birds

The official state birds of every state and tips on how to find them.
http://www.webspawner.com/users/p389/

American Bird Conservancy

A not-for-profit dedicated to the conservation of wild birds and their habitats in the Americas.
http://www.abcbirds.org/

Scouting for Birds

Promotes the Boy Scouts' Bird Study Merit Badge, with guides for scouts and teachers.
http://k2gw.tripod.com/birdstudy/

Birdwatch America

Supports the business of birding in the US.
http://www.birdwatchamerica.com/

Ya Know You're a Birder

Bird comics and backyard birding.
http://lightning.prohosting.com/~ees101/birds/comicindex.htm

BirdPerch

Photo gallery, magazine photo index, and list of places to bird.
http://www.birdperch.com

Identification Issues

Don Roberson's detailed discussions and photos of 10 ID problems, mainly dealing with California birds.
http://montereybay.com/creagrus/identification.html

Birds: Bellwethers of Watershed Health

Educational resource on the importance of birds as watershed health indicators and how to improve watershed conditions.
http://www.epa.gov/watertrain/birds/

SEPART-L

Archives and subscription management for the e-mail group for discussion of neotropical migratory birds in the southeastern United States.
http://listserv.uark.edu/archives/separt-l.html

National Birder's Forum

Chat for beginning birders.
http://groups.yahoo.com/group/nationalbirdersforum/

Birds in Nature

Photographs of wild birds by Richard Ditch. Includes an extensive tutorial and information on many aspects of bird photography.
http://home.earthlink.net/~richditch/

Trochilids

Winter western hummingbird reports from Mississippi, Louisiana, and the eastern US.
http://www.trochilids.com/

BirdCentral

Photo gallery by Jim Rosso; birds in the classroom project.
http://birdcentral.net/

Northern Prairie Wildlife Research Center

Large number of articles with detailed information about United States birds.
http://www.npwrc.usgs.gov/resource/taxa_n.htm

Robert Winkler - Nature Writing

Excerpts, reviews, bird photos, and links from the author of "Going Wild: Adventures with Birds in the Suburban Wilderness".
http://pages.cthome.net/rwinkler/

BirdBrain

A birding portal with learning games, links to news articles, photos, sound files, and links.
http://ebirdbrain.com/

Birdwatching in the National Parks

Links to articles and checklists for finding birds on National Park Service land throughout the US.
http://www.nps.gov/oia/NPSBirds.html

BirdingGuide.com

Information, resources, and links for bird watching.
http://www.birdingguide.com/