Feathers trap air to keep birds warm. When the weather gets colder ,the emperor penguin fluffs up its feather .How does this help the emperor penguin ?
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Explanation:
When it gets very cold, penguins can puff their feathers out to trap more air for even better insulation. When it gets too hot (like as high as freezing point even!) they fluff their feathers out even more so that the trapped warm air can escape and enable the penguin to cool down.
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