This Web site is the online companion to Extraordinary Birds, a recent documentary from PBS's Nature. "From Kundha Kulam's vibrant monsoon marshes to the rugged American Rockies," Extraordinary Birds explores the "intimate links that people have forged with birds." This is a great site to visit whether you've seen the program or not. Users will find video clips, an interview with the editor of...

This companion to a new PBS series featuring renowned wildlife documentary host Sir David Attenborough is not as feature-rich as some comparable sites but deserves a visit nonetheless. Essentially a collection of five thoughtful illustrated essays, the site explores bird evolution, intelligence, songs (with RealPlayer examples), parenting, and several superlative birds. Additional contents include...

Well known among ornithologists, the Academy of Natural Sciences' VIREO (Visual Resource for Ornithology) is "the world's most comprehensive collection of bird photographs. It houses over 96,000 35mm slides and 5,000 black-and-white prints of over 6,100 bird species," including every species of bird in North America. The VIREO homepage contains four sections: Slides for Publication & Reference...