They diversified as the Andes were being uplifted, and the most diverse populations of hummingbirds are still in the Americas
Aside from insects, a hummingbird in flight has the highest metabolic rate in the animal kingdom. Their heart rate can reach over 1,200 beats per minute
Unlike most birds, who only produce lift in the downstroke of the wing, hummingbirds can do it on the upstroke as well by inverting their wings
Hummingbirds can live more than a decade, which is a very long time for an animal with such a high metabolism.
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