Web Results
Class Aves
Birds are vertebrates with feathers, modified for flight and for active metabolism. Birds are a monophyletic lineage, evolved once from a common ancestor, and all birds are related through that common origin. More >>
Other Classes:

Bird - Wikipedia

en.wikipedia.org/wiki/Bird

Birds (Aves), also known as avian dinosaurs, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of ...

Online bird guide, bird ID help, life history, bird sounds from Cornell

www.allaboutbirds.org/

Comprehensive guide to North American birds and bird watching from the Cornell Lab of Ornithology. Includes Bird Guide with identification, life history, sound ...

Search for a bird by entering name, description, and keywords, All ...

www.allaboutbirds.org/guide/

Use our Bird Guide to identify birds, learn about the life history, listen to the sounds, and watch bird behavior on video--the most comprehensive guide to North ...

Birds Travel Coverage - The New York Times

www.nytimes.com/travel/guides/birds/overview.html

With no resolution to the standoff in sight, birders are concerned that one of the nation's premier observation spots for birds will be off limits for the foreseeable ...

Birds - NYS Dept. of Environmental Conservation

www.dec.ny.gov/animals/271.html

New York State is home to a variety of bird species. Besides information on specific birds and endangered species of birds, the following information and tools ...

Birds, Bird Pictures, Wild Birds - National Geographic

animals.nationalgeographic.com/animals/birds/

Learn all you wanted to know about birds with pictures, videos, photos, facts, and news from National Geographic.

Birds - National Geographic Kids

kids.nationalgeographic.com/animals/hubs/birds/

Birds are warm-blooded vertebrates (vertebrates have backbones) and are the only animals with feathers. Although all birds have wings, a few species can't fly.

Birds Pictures | Types Of Birds | Bird Identification | San Diego Zoo ...

kids.sandiegozoo.org/animals/birds

Find information on birds courtesy of the San Diego Zoo.

Birds | Audubon

www.audubon.org/birds

After significant declines in population during much of the 20th century, our national symbol has made a comeback in many areas since the 1970s. (Photo: Jan ...