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Passing of the Passerines
Should we be worried about the decline of bird species around the world? Taking the long view, birds are presumed by many evolutionary biologists to be the only remaining dinosaurs of the Cretaceous-Tertiary extinction from 65 million years ago.
They were doing pretty well until humans came along. Consider that some 2,000 species -- one fifth of the world's inventory -- have disappeared just from Pacific islands since human colonization began 2,000 years ago...
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