Birds are bipedal, warm-blooded, egg-laying vertebrates. They are characterized by feathers, forelimbs modified as wings, and hollow bones. There are more than 100000 different species of living birds. Here you can find a many different kind of birds: there are sea birds like seagull and pelican, country birds like sparrow, non-flying birds like chicken and ostrich.
Category:animals photo. birds 5 stars (79 votes)
Download:The photos are part of Cepolina photo collection.
keys:birds, bipedal, warm-blooded, egg-laying vertebrates, feathers, forelimbs, living birds, sea birds, seagulls, pelicans, sparrows, chickens, ostrichesbirds.