Birding

GORP - Birdwatching Practical Advice - Articles, guides to sites throughout the world, species information, resources, and links of interest to birders.
http://www.gorp.com/weekend-guide/birdwatching-advice-guide-sp.html

Birding on the Net - Recent messages of birding e-mail groups, rare bird alerts, artwork, checklists, news, and links.
http://birdingonthe.net/

International Migratory Bird Day - Annual event held the second Saturday in May. Brief information about the event and online store.
http://www.birdday.org/

Bird Links to the World - Collection of links related to birds, birding, and birders, divided by geographic location.
http://www.bsc-eoc.org/links/links.jsp

Birding Site Guide - Descriptions and bird lists for birding sites worldwide.
http://www.birdingsiteguide.com/

Ornifolks - Network of US birders who share trip expenses to bird distant places as economically as possible. Newsletter and trip reports from around the world.
http://ornifolks.org/ornifolks.htm

Birding.com - Photos, songs, birding hot spots, checklists, links, and advice for new and backyard birders.
http://www.birding.com/

thebirdinsight.com - Forum for keen birdwatchers and bird conservationists from around the world.
http://thebirdinsight.com/forum/

Bubo - World bird listing database. Record lists for any location worldwide, share and compare lists with other users. Includes checklists, forum, FAQ, and photos.
http://www.bubo.org/

Birds I Saw - Bird photographs from around the world. Allows users to assemble their own books for birds, with output in pdf or html.
http://www.fsquares.com/bis/

Bird Forum - Forums for discussion of birds, birding, and bird photography worldwide. Includes photo gallery and trip reports.
http://www.birdforum.net/

Surfbirder - A search engine for birds and birding.
http://www.surfbirder.com/

WorldTwitch - Guide to finding rare birds around the world.
http://www.worldtwitch.com/

Fat Birder - News, worldwide birding links, and reviews.
http://www.fatbirder.com/

Birding the World - Don Roberson's detailed guide to birding in each of the world's biogeographic regions.
http://montereybay.com/creagrus/world.html

Surfbirds - World birding news, identification and bird finding articles, photographs, sketches, and trip reports.
http://www.surfbirds.com/index.php

Ocean Wanderers - Seabird news, pelagic birding around the world, annotated lists of seabirds and marine mammals, photo gallery, photo quiz, list of identification articles, and links.
http://www.oceanwanderers.com/

Xeno Canto - A collection of bird songs from around the world. Includes a database of recordings, a forum, links, and FAQs.
http://www.xeno-canto.org/

Where Do You Want to Go Birding Today? - Information about birds and birding worldwide. Endemic and specialty bird information for many countries; photographs and links to checklists and other resources.
http://www.camacdonald.com/birding/birding.htm

Simply Birding - Includes a forum, ID guides, birding venue information, maps, and an online shop.
http://www.simplybirding.com

BirdSite - A community-based website for sharing bird images and sounds from around the world.
http://birdsite.org/

The Birding Home - Logs of birders' observations from around the world.
http://www.thebirdinghome.org/cgi-bin/bigbird.pl

BirdChat Quiz - Stephane Moniotte's site with quiz birds, results of past quizzes, and photographs.
http://www.angelfire.com/ms/moniotte/

About Birding/Wild Birds - Articles and links.
http://birding.about.com/

BirdingPal - Worldwide list of contacts, grouped by location, who are willing to help travelling birdwatchers.
http://birdingpal.org/