Do Hummingbirds Hum?: Fascinating Answers to Questions about Hummingbirds

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Hummingbirds may be the smallest birds in the world, but they have the biggest appetites. Their wings flutter on average fifty to eighty times each second as they visit hundreds of flowers over the course of a day to sip the sweet nectar that sustains them. Their hearts beat nearly twelve hundred times a minute and their rapid breathing allows these amazing birds to sustain their unique manner of flight. They can hover in the air for prolonged periods, fly backwards using forceful wings that swivel at the shoulder, and dive ...

Do Hummingbirds Hum?: Fascinating Answers to Questions about Hummingbirds 2010, Rutgers University Press, New Brunswick, NJ

ISBN-13: 9780813547381

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