Weather.com - 4/18/13, Jess Baker
Greg and Yvonne Dean/The World's Rarest Birds Photo Competition 2012
Birds rule the air, but hundreds of different species have seen a population decline so frightening, experts say they could vanish off the face of the earth at anytime.
As of 2012, more than 1300 bird species are facing extinction, according to BirdLife International. The World's Rarest Birds, a new book, features photos of 800 of those birds.
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