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Term Bird

Vertebrate animal with two feathered wings. There are two groups of birds: those that can fly and those that have lost the ability to do so. The latter are known as ratites or runners. Birds are descendants of reptiles. Currently it is estimated that there are about 10,000 species of birds around the world.


Additional Information
PhotoAve - Lechuza Cara Ceniza
Topic  BiodiversityProtected areas