Biology

An online bird guide, birding tips, and links to bird cams from the Cornell Laboratory of Ornithology.

All about ornithology, the scientific study of birds; presented by the Ornithological Council.

World's largest and oldest scientific archive of biodiversity audio and video recordings.

This website is designed to assist feather identification by providing high-resolution scans of flight feathers of major groups of North American birds.

Online video library of the world's birds sponsored by the Handbook of the Birds of the World.

This is a web browser-based electronic book collection of Life Histories of North American Birds, selected from the hundreds of species biographies assembled and written by Arthur Cleveland Bent and his collaborators and published in a twenty-one volume series between 1919 and 1968 by the United States Government Printing Office.

Founded in 1990 to foster the study and appreciation of the birds of Pennsylvania and to promote the conservation of birds and their habitat.

Searchable Ornithological Research Archive.