plumage

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plumage

(plo͞o′mĭj)
n.
The covering of feathers on a bird.

plum′aged adj.
References in periodicals archive ?
Sam had gone into eclipse plumage as surely as any of these ducks.
During this time the males acquire female-like feathers called an eclipse plumage that isn't as conspicuous as the breeding plumage and may help in avoiding predators.