Hummingbirds are the smallest birds in the world, and they are found only in the Americas. They g their na from t humming so made b their wi, which c beat a many a eighty ti per second. This allows them to hover in one place while they drink nectar from flowers. Because flying this way uses so much energy, hummingbirds must eat many times a day. At night, they can lower their body temperature to save energy.

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