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The yellow warbler is a small bird, usually between 10 and 18 cm in length with a wingspan of 16 to 22 cm. They weigh around 7 to 25 g, with variations among subspecies. There are 35 subspecies of the yellow warbler, divided into three main groups based on male head color during the breeding season.
The yellow-rumped warbler (Setophaga coronata) is a regular North American bird species that can be commonly observed all across the continent.Its extensive distribution range connects both the Pacific and Atlantic coasts of the U.S. as well as Canada and Central America, with the population concentrating in the continent's northern parts during the breeding season and migrating southwards to ...
The term "Darwin's finches" was first applied by Percy Lowe in 1936, and popularised in 1947 by David Lack in his book Darwin's Finches. [ 7 ] [ 8 ] Lack based his analysis on the large collection of museum specimens collected by the 1905–06 Galápagos expedition of the California Academy of Sciences, to whom Lack dedicated his 1947 book.
In spring and early summer, adult males are bright yellow, while females are a duller yellow. During the winter, these birds look brown rather than golden and you’ll spot the active little ...
In summer, male yellow-throated warblers display grey upperparts and wings, with double white wing bars. Their throats are yellow, and the remainder of their underparts are white, and are streaked with black on the flanks. Their heads are strongly patterned in black and white, with a long supercilium; the different subspecies may display yellow ...
Common yellowthroats are small songbirds that have olive backs, wings and tails, yellow throats and chests, and white bellies. Adult males have black face masks which stretch from the sides of the neck across the eyes and forehead, which are bordered above with white or gray. Females are similar in appearance, but have paler underparts and lack ...
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 only finch in its subfamily to undergo a complete molt, the American ...
Wilson's warbler (Cardellina pusilla) is a small New World warbler. It is greenish above and yellow below, with rounded wings and a long, slim tail. The male has a black crown patch; depending on the subspecies, that mark is reduced or absent in the female. It breeds across Canada and south through the western United States, and winters from ...