Plumage life history (IMAGE)

University of Washington

Plumage life history

Caption

Juvenile white-necked jacobin hummingbirds have a bright blue-and-white plumage, which all males retain as adults. Most female white-necked jacobin hummingbirds develop a “muted” plumage as adults, but approximately 20% develop male-like plumage.

Credit

Jillian Ditner

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