juvenal plumage

American  

[joo-vuh-nl] / ˈdʒu və nl /

noun

Ornithology.

1. the first plumage of birds, composed of contour feathers, which in certain species follows the naked nestling stage and in other species follows the molt of natal down.

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Etymology

Origin of juvenal plumage

< Latin juvenālis youthful, equivalent to juven ( is ) young man or woman + -ālis -al ¹

Example Sentences

In juvenal plumage both species are entirely buff below, the feathers more or less tipped with dusky.

From Descriptions of Three New Birds from the Belgian Congo Bulletin of the AMNH , Vol. XXXIV, Art. XVI, pp. 509-513, Oct. 20th, 1915 by Chapin, James

Perhaps half the birds seen were in juvenal plumage.

From Vertebrates from the Barrier Island of Tamaulipas, M?xico by Johnston, Richard F.

July 28, 1962, MCT 2675; sex?, young in juvenal plumage, MCT 2812; ♂, April 28, 1963, ADG 76.

From Birds from North Borneo University of Kansas Publications, Museum of Natural History, Volume 17, No. 8, pp. 377-433, October 27, 1966 by Thompson, Max C.

On October 3, 1962, I saw two adults with two young in nondescript juvenal plumage with virtually no markings and a pale yellow color, unlike that of the adults.

From Birds from North Borneo University of Kansas Publications, Museum of Natural History, Volume 17, No. 8, pp. 377-433, October 27, 1966 by Thompson, Max C.

The actual evidence was provided by females with active brood patches or active ovaries, males with enlarged testes, birds in juvenal plumage, or birds actively in annual molt.

From Birds from North Borneo University of Kansas Publications, Museum of Natural History, Volume 17, No. 8, pp. 377-433, October 27, 1966 by Thompson, Max C.