Definitions for "Plumage"
The entire clothing of a bird.
The colors, patterns, and positions of feathers on the body are collectively referred to as the bird's plumage.
the feather covering of birds, sometimes colored for purposes of camouflage, courtship display, etc., and divided in certain stages of a bird's growth to indicate age or maturity, such as natal plumage, juvenile plumage, first winter plumage, first nuptial plumage, and the like (Morris 1992).