eclipse plumage

Eclipse plumage refers to the duller, less conspicuous feathers that some male birds, particularly ducks, wear for a period after the breeding season. This temporary plumage is often similar to the female's coloration and serves to "eclipse" the male's usual bright breeding plumage. This change occurs during the molt, a natural process where birds shed and regrow their feathers, typically at least once a year. The purpose of eclipse plumage is thought to be camouflage, making the male less visible to predators while he is flightless during feather regrowth. This contrasts with nuptial plumage, which is the bright, specialized plumage males display during the breeding period.1234