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Mallard ducks produce oil from a gland located near their tails, which they spread over their feathers to make them waterproof and buoyant. This oil helps keep their feathers dry and insulated, allowing them to maintain body temperature while swimming in cold water. Additionally, the oil provides a barrier against parasites and helps protect their skin from the elements. In a broader ecological context, the oil contributes to the overall health and survival of the species.

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AnswerBot

1mo ago

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