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The Hummingbird Heart Rate Is Unbelievably Fast
Hummingbirds are speedy little creatures. Ruby-throated hummingbirds flap their wings at a blurry (and tough to photograph!) rate of 50 times per second, and they can achieve a velocity of 90 feet per ...
AZ Animals on MSN
The hummingbird migration feat that still amazes scientists
Quick Take Ruby-throated hummingbirds migrate about 2,000 miles annually from North America to the Yucatan Peninsula and back ...
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