[Answer] What is the only bird that hibernates?

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What is the only bird that hibernates?

• Common poorwill:The common poorwill is the only bird known to go into a state of hibernation. During the winter when food is scarce, instead of migrating to a warmer climate like other birds, the common poorwill can slow its metabolic rate and drop its body temperature so it can survive several weeks or months without eating. Scientists have been astonished to learn that the common poorwill can lower its body temperature to 41° Fahrenheit and reduce their oxygen consumption by more than 90%. Native Americans of the Hopi tribe were likely aware of the Poorwill's behavior — the Hopi word for the bird means "The Sleeping One."

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