pennaceous

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pennaceous

[pə′nā·shəs]
(zoology)
Referring to the stiff, tightly bound portion of the feather vane on a bird.
References in periodicals archive ?
The sample from the pillow that was examined for bird identifications was composed of a nearly equal mix of both downy and pennaceous feather types.
Once the avian group is determined from the microstrucutre, species identifications can then be made if adequate pennaceous feathers are available to match with museum collections of voucher specimens.