American goldfinch
The American goldfinch 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. It has a striking jet-black underside with a pale yellow face and bib with a bright lemon yellow rump.
About American goldfinch in brief
The American goldfinch 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 male is a vibrant yellow in the summer, while the female is a dull yellow-brown shade which brightens only slightly during the summer. This species is generally monogamous, and produces one brood each year. It was one of the many species originally described by Carl Linnaeus in the landmark 1758 10th edition of his work Systema Naturae. In 1976, Spinus was merged into the genus Carduelis as a subgenus. The species name tristis is Latin for’sorrowful’. There are four recognized subspecies of the AmericanGoldfinch: This seems to be the most ancient extant species of the Meso-American SpinusCarduelis evolutive radiation, whose parental species is Lawrence’s goldfinches. The American Goldfinch undergoes a molt in the spring and autumn. During the winter molt it sheds all its feathers, which are dark brown in the female and black in the male. The autumn plumage is almost identical in both sexes, but the male has yellow shoulder patches. In some cases, both sexes lose all traces of yellow, becoming a predominantly medium tan-gray color with an immature tinge of olive tinge on the underside.
The beak is small, conical, and pink for most of the year, but turns bright orange with the spring molt. The shape and size of the beak aid in the extraction of seeds from the seed heads of thistles, sunflowers, and other plants. The body of the body is a colorenoid pigments materials in its diet, with a striking black cap and white rump that is visible during flight. It weighs between 11–20 g. Among standard measurements, the wing chord is 6. 5 to 7. 8 cm, the tail is 4. 2 to 5. 1 cm, the culmen is 0. 9 to 1.1 cm and the tarsus is 1. 2 cm and 1. 4 cm. It is the only cardueline finch to undergo a m revolt twice a year, and the only finch in its subfamily to shed all but the wing and tail feathers in spring and winter. It has a striking jet-black underside with a pale yellow face and bib with a bright lemon yellow rump. It can be found in residential areas, attracted to bird feeders which increase its survival rate in these areas. Deforestation also creates open meadow areas which are its preferred habitat. It has been known to eat garden vegetation, and is particularly fond of beet greens. It may behave territorially during nest construction, but this aggression is short-lived. Its breeding season is tied to the peak of food supply.
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This page is based on the article American goldfinch published in Wikipedia (as of Dec. 01, 2020) and was automatically summarized using artificial intelligence.
