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.
Wikispecies has information related to Aves.
For individual species of birds, see the subcategories, particularly category:Birds by classification and category:Birds by country.