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The five most unique birds in the world

10,000 Birds

The Cuckoo Roller — today found only in Madagascar and Comoros — is an oddball bird with a puffy head and a chameleon-eating habit. It is related to hawks and eagles, but only distantly, with an estimated divergence date not long after the K-T extinction. Oilbirds ( Steatornis caripensis ) in Ecuador © Corey Finger.