Cornell Lab of Ornithology
Cornell Lab of Ornithology: Modern Extinctions on Mainland North America
Since 1850 North America has lost three bird species--the Labrador Duck, Passenger Pigeon, and Carolina Parakeet--and the continued existence of another three is unlikely, namely the Eskimo Curlew, Ivory-billed Woodpecker, and Bachman's...
Smithsonian Institution
Smithsonian National Zoo: Birds
The Smithsonian National Zoological Park provides a detailed look at birds. Content includes a focus on the Zoo's bird house exhibit, as well as bird houses, flight cages, bird facts, bird information for kids, an FAQ section, a photo...
San Diego Zoo Global
San Diego Zoo: Birds
This resource provides detailed information about birds, as well as several pictures.