A huge dictionary where you can look up hundreds of bird species to get interesting and helpful information.

Includes 44 birds, with beautiful pictures of males & females, their nests and eggs. Also has clutch size, incubation and brooding periods, plus more!

The Cornell Lab of Ornithology is a world leader in the study, appreciation, and conservation of birds. Through science & innovation they advance the understanding of nature and engage people of all ages in learning about birds and protecting the planet. Common Nesting Birds, All About Birds and NestWatch are all part of The Cornell Lab of Ornithology

Nationwide nest monitoring program.  Sign up to participate in logging your nesting data.

The NABS is an all volunteer, non-profit education, conservation and research organization that promotes the recovery of bluebirds and other native cavity-nesting bird species in North America.

Around 1000 pages related to bluebirds. Has an index, site map and search tool to help you look something up, or just get lost browsing all the information.