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This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?

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Owls are nearly noiseless hunters, swooping down on prey without any warning whoosh.

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How do they do it?

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We've known that the leading edge of an owl's wing has a comb of stiff feathers.

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And the trailing edge has a flexible fringe, unlike the rigid trailing edge of a conventional bird wing.

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These two features contribute to a structure that produces almost no noise as it rushes through the air.

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Now it appears that these predators have a third trick up their sleeves. or rather, wings, that allow them to be so silent but deadly.

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Researchers modeled the effect of the layer of down on the wing's top surface.

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And it looks like that fluffy stuff absorbs sound too.

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The work was presented at a meeting of the American Physical Society's Division of Fluid Dynamics.

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Mimicking owl wing down may lead to new sound-proofing materials.

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Down and the other silencing features could inspire wind turbines and plane engines that produce less noise and fewer vibrations.

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So that all we hear is.

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Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.

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