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Hummingbird feeding at a flower, Hall Park, Frisco, Texas #122158678
Description
Pictured is a hummingbird feeding at a flower in Hall Park, Frisco, Texas. There are 338 known species. Hummingbirds have the highest metabolism of any homeothermic animal. They are known as hummingbirds because of the humming sound created by their beating wings which flap at high frequencies audible to humans.