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The American goldfinch displays sexual dimorphism in its coloration; the male is a vibrant yellow in the summer and an olive color during the winter months, while the female is a dull yellow-brown shade which brightens only slightly during the summer. The male displays brightly colored plumage during the
The American goldfinch (Spinus tristis) is a small North American bird in the finch family. It is migratory , ranging from mid- Alberta to North Carolina during the breeding season , and from just south of the Canada–United States border to Mexico during the winter.
The basic plumage colour is brownish, sometimes greenish; many have considerable amounts of black, while white plumage is generally absent except as wing-bars or other signalling marks. Bright yellow and red carotenoid pigments are commonplace in this family, and thus blue structural colours are rather rare, as the yellow pigments turn the blue ...
The lesser goldfinch was formally described by the American zoologist Thomas Say in 1822 under the binomial name Fringilla psaltria. [4] The specific epithet psaltria is Ancient Greek for a female harpist. [5] The type locality is Colorado Springs, Colorado. [6]
Adult male Eurasian siskins are bright green and yellow with a black cap, and an unstreaked throat and breast; the pine siskin does not have a corresponding bright plumage. Adult female Eurasian siskins also usually have green and yellow plumage tones: for example, yellow in the supercilium and on the sides of the breast, green tones in the ...
Eastern goldfinch (American goldfinch) Spinus tristis tristis: 1935 [36] New Mexico: Greater roadrunner: Geococcyx californianus: 1949 [37] New York: Eastern bluebird: Sialia sialis: 1970 [38] North Carolina: Northern cardinal: Cardinalis cardinalis: 1943 [39] North Dakota: Western meadowlark: Sturnella neglecta: 1970 [40] Northern Mariana ...
The house finch (Haemorhous mexicanus) is a North American bird in the finch family.It is native to Mexico and southwestern United States, but has since been introduced to the eastern part of North America and Hawaii; it is now found year-round in all parts of the United States and most of Mexico, with some residing near the border of Canada.
The plumage of the female is more olive-coloured than the male. The cap and the auriculas are greenish with a white bib and a rump that is a slightly striped whitish yellow. [15] The young have a similar colouration to the females, with drab colours and a more subdued plumage. [9] The shape of the siskin's beak is determined by its feeding habits.