Category:Birds
From Wikipedia, the free encyclopedia
Birds are bipedal, warm-blooded, egg-laying vertebrates characterized primarily by feathers, forelimbs modified as wings, and hollow bones. This category contains taxa at the order or higher level in the class of Aves.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/34px-Wikispecies-logo.svg.png)
Wikispecies has information related to Aves.
For individual species of birds, see the subcategories, particularly category:Birds by classification and category:Birds by country.