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Desert Duets: Sonoran Desert Poems for Two Voices Birds
What are the characteristics of birds? Birds are vertebrates, animals with backbones, that lay eggs. They are warm-blooded. They have feathers, toothless beaks, and wings. Most birds can fly. Their light weight and strong skeletons help them fly. For more information: All Content © 2008 - 2010 Judi Moreillon
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