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Birds (class Aves) – winged, bipedal, endothermic (warm-blooded), egg-laying, vertebrate animals. There are around 10,000 living species, making them the most varied of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic, to the Antarctic.
The first edition of the AOU Checklist of North American Birds. The AOS Checklist of North American Birds is a checklist of the bird species found in North and Middle America which is now maintained by the American Ornithological Society (AOS). The checklist was originally published by the AOS's predecessor, the American Ornithologists' Union ...
The Sibley Guide to Birds is a reference work and field guide for the birds found in the continental United States and Canada. It is written and illustrated by ornithologist David Allen Sibley . The book provides details on 810 species of birds, with information about identification, life history, vocalizations, and geographic distribution.
PFG 1: A Field Guide to the Birds (1934), by Roger Tory Peterson . Second edition (1939): A Field Guide to the Birds Third edition (1947): A Field Guide to the Birds Fourth edition (1980): A Field Guide to the Birds: A Completely New Guide to All the Birds of Eastern and Central North America
As a complement to the Handbook of the Birds of the World and with the ultimate goal of disseminating knowledge about the world's avifauna, in 2002 Lynx Edicions started the Internet Bird Collection (IBC). It is a free-access, but not free-licensed, on-line audiovisual library [3] of the world's birds with the aim of posting videos, photos and ...
Get a daily dose of cute photos of animals like cats, dogs, and more along with animal related news stories for your daily life from AOL.