The Hummingbird Wing Beat Challenge | Audubon
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Nature Blows My Mind! Hummingbirds and Their Freaky Flying Abilities
Hummingbird - Wikipedia
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Keith Ladzinski - Hummingbirds flap their wings 70 times per second, which is 4200 times per minute! It's an incredible thing to think about. It takes an excessive amount of energy to
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