Meaning & use

Filoplume

noun·Advanced

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A small, hairlike feather with a slender shaft and a few barbs near the tip, found among a bird's contour feathers and thought to help sense feather position.

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Under magnification, the researcher pointed out delicate filoplumes scattered among the hawk's larger feathers.

Filoplumes are so fine that they're easy to overlook next to a bird's showier plumage.

A note on using this word

From Latin 'filum' (thread) and 'pluma' (feather); filoplumes are believed to act like sensory hairs, helping birds detect the position of their other feathers.

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