Scholastic and AMNH present Scicence Explorations Soar with Bats: Night Fliers of the Skies
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Rufous Hummingbird
A bird's wing is different from a bat's wing. While the bird's wing is formed mostly of feathers, the bat's wing is a double layer of skin stretched over the thin bones of its arm and fingers.


Rufous Hummingbird

(Photo: U.S. Fish and Wildlife Service)
   
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