Plumage and size variation in adult and juvenile Rufous Treecreepers Climacteris rufa

Plumage descriptions and morphometric measurements were obtained from adult and juvenile Rufous Treecreepers of both sexes. Plumage characteristics differed between the sexes in adults and juveniles, and between adults and juveniles of the same sex. The main plumage differences between adults and juveniles were the overall darker coloration of the juvenile plumage and the variation in upper breast pattern. Males and females, and adults and juveniles (of the same sex) also exhibited significant size dimorphism in a number of morphometric characters.

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