In “A World on the Wing,” Scott Weidensaul describes the splendor of birds that can span continents in their flight, and also all the ways they are threatened.In “A World on the Wing,” Scott Weidensaul describes the splendor of birds that can span continents in their flight, and also all the ways they are threatened.Read MoreBooks and Literature, Birds, Animal Migration, Birdwatching, Audubon Society, National, A World on the Wing: The Global Odyssey of Migratory Birds (Book), Weidensaul, Scott