filoplume

avian anatomy

Also known as: hair feather

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Last updated

June 26, 2026

Quick Summary

feather types Feather types and their distribution on a typical perching bird.

Filoplumes are a type of hairlike feather found on birds. They have a slender shaft with a few soft barbs near the tip. These feathers are associated with contour feathers and may serve a sensory or decorative function. Filoplumes are present in all birds, though they may not always be visible beyond the contour feathers. They are distinct from contour feathers, which form the bird's body outline and aid in flight, and down feathers (plumules), which provide insulation.123

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5 Britannica Sources

bird - Other external features
integument - Birds
filoplume
passeriform - Plumage and pterylosis
bird-of-paradise

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bird
Feathers
Filoplumes are hairlike feathers with a few soft barbs near the tip. They are associated with contour feathers and may be sensory or decorative in function. Bristlelike, vaneless feathers occur around the mouth, eyes, and nostrils of birds. They are especially conspicuous around the gape…
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Filoplumes are hairlike feathers with a few soft barbs near the tip. They are associated with contour feathers and may be sensory or decorative in function. Bristlelike, vaneless feathers occur around the mouth, eyes, and nostrils of birds. They are especially conspicuous around the gape…
Read More
integument
Birds
…and serve as aerodynamic devices; filoplumes (hair feathers) and plumules (down feathers) are used principally as insulation, to conserve body heat. Colours and patterns in feathers serve as protective coloration or for sexual display.
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…and serve as aerodynamic devices; filoplumes (hair feathers) and plumules (down feathers) are used principally as insulation, to conserve body heat. Colours and patterns in feathers serve as protective coloration or for sexual display.
Read More