Migration of Birds e-bog

Why do birds migrate -- and just how do they do it? The Migration of Birds is a comprehensive illustrated presentation of the mysteries of bird migration. Ornithologist Janice M. Hughes describes the findings of the most recent research and surveys as-yet-unanswered questions. She unravels the exciting contributions of cutting-edge technological innovations and scientific developments. Over 70 stunning full-color photographs show some of the world's most dauntless voyagers. Maps show migration routes, and illustrations depict the mechanics of flying. The text is engaging and straightforward as well as authoritative and comprehensive, covering: Bird migration through human history, with profiles of Chinese cranes and phalaropes The five Ws of avian migration, with profiles of shrikes and Arctic terns The phenomenon of flight, with profiles of wheatears and dippers How birds find their way, with profiles of redwings, fieldfares and Bohemian waxwings Migratory birds in peril. This book will fascinate birders, naturalists and conservationists as well as general readers.