Birdzilla - Sightings, newsletter, articles, species profiles including the complete text of Bent's Life Histories, bird lists, photos, backyard birding, and shopping. Cornell Laboratory of Ornithology - A membership institution interpreting and conserving the earth's biological diversity through research, education, and citizen science focused on birds. Birdwatching - Frequently asked questions, birding tips, articles, and store. North American Bird Sounds - Doug Von Gausig's site with bird songs, other sounds, and some explanatory text. Hawk Migration Association of North America - Monitors raptor migration throughout North America. Hummingbirds - Photograph album, migration maps, attracting and feeding tips, species accounts, and articles. The Bird Guide - Site guides, identification articles, and links for the Pacific Northwest, including Oregon, Washington, California, Idaho, and British Columbia. The Virtual Birder - Virtual birding tours of North America's leading hot spots, articles, rare bird alerts, e-mail discussion group archives, and photo galleries. North America Rare Bird Alert - Subscription reporting service on rare birds in the United States and Canada. Bird Watcher's Digest - Magazine for birdwatching, birding, backyard bird feeding, bird gardening, bird identification, bird travel, and birding products. On Silent Wings Bird Photography - Photographs of birds from the ABA North American region, with birding and photograph links for beginners to experts. Partners in Flight - An association supported by federal, state, and regional governments dedicated to the preservation of bird species that summer in North America and winter in South America. Volunteer information and species data. Patuxent - Bird Population Studies - Data on North American birds, including the Breeding Bird Survey, Christmas Bird Count trends, migratory bird projects, the Bird Identification InfoCenter, checklists, ID tips, and quiz. WBBA Species Audio Library - Collection of 200 bird song audio recordings in high-quality MP3 format. All recordings were made in Wisconsin. Old Bird, Inc. - Information about the Flight Calls of Migratory Birds (Eastern North American Landbirds) CD-ROM and the Dickcissel night flight call monitoring project. North American Bird Photography Gallery - Photographs of many species by Peter LaTourrette. North American Bird Notes - Notes, distribution maps, and photos of current rarities. Includes gull section and bird quizzes. Peterson Birding Resources - Links and list of bird spectacles. HawkCount - Daily reports of migrant hawks seen at many North American hawk watch sites. John James Audubon's Birds of America - Audubon's images and original text descriptions from an 1840 (First Octavo Edition) of Audubon's complete seven volume text. Boreal Songbird Initiative - Dedicated to educating birdwatchers and naturalists about the importance of the boreal forest of North America to migratory birds. Sibley Guides - Information about the Sibley Guide to Birds, including updates, subspecies, and a gallery of David Sibley's paintings. Birdfilms.com - Videos and DVDs on the lives and natural habitats of North American birds by Michael Male and Judy Fieth. eNature Birds - Species accounts of North American birds, including images, descriptions, and sounds. WhatBird - A step-by-step parametric search engine for identifying birds in North America. Illustrations, calls, and links. All About Birds - Comprehensive guide to North American birds and bird watching from the Cornell Lab of Ornithology. Includes Bird Guide with identification, life history, sound and video recordings of each bird, with additional 'Birds of North America' material available to subscribers. The Nature Conservancy - Migratory Bird Program - Programs to protect critical habitats for birds throughout the Western Hemisphere. Species abstracts, fact sheets, and links. American Birding Association - North America's largest membership organization for active birders, with news, details on publications and programs, and birding resources. Birds of North America - A reference series on North American birds, with information and sample profiles.