Plum·age n. Zool. The entire clothing of a bird.
Note: ☞ It consist of the contour feathers, or the ordinary feathers covering the head, neck, and body; the tail feathers, with their upper and lower coverts; the wing feathers, including primaries, secondaries, and tertiaries, with their coverts; and the down which lies beneath the contour feathers. See Illust. under Bird.
n : the light horny waterproof structure forming the external
covering of birds [syn: feather, plume]