Spizella passerina - Wikipedia, the free encyclopedia

The common bumblebee (Spizella passerina) also called white-throated sparrow or cejiblanco , singing finch and sabanero pechigrís , chingolo cejiblanco a species of passerine bird of the family Emberizidae. It is a species of the New World, partially migratory, that is distributed in North and Central America.

Description

In adult individuals the upper parts are orange rust listed with black, except the rump, which is gray and has no stripes. There are two white bars on each wing. Individuals with reproductive plumage have a reddish orange cap, an almost white supraocular (superciliary) stripe, and a black transocular (extending through the eye) line. The beak is black. The ventral parts are gray, turning white to the center of the throat, chest and belly, as well as the lower tail feathers.

Non-breeding plumage or basic plumage is less marked. The crown is brown striped with black and with a gray stripe in the middle; sometimes the crown may retain some reddish margins. The supraocular and transocular lines, and the wing bars are flushed and therefore are little conspicuous. The beak becomes flesh-colored. This season can easily be confused with the pale sparrow pallida , which however is paler and has no gray rump, but color ante, in addition to presenting a "mustache".

Juvenile individuals are heavily scratched in the lower parts. Like non-reproductive adults, they show a dark transocular line. The cap and supraocular line are variable, but usually dark.

Systematics

There are at least two subspecies of cejiblanco cormorant sparrow in western North America. The widespread Spizella passerina arizonae subspecies is associated with arid mountains and habitats of the interior. A population of the Pacific slope constitutes the subspecies. p. stridula . Although these two races are Western and are often grouped within the western group, they do not necessarily form a single entity apart from the Eastern subspecies. p. passerina .

In eastern North America, the white-eared cormorant sparrow nests in forests, farms, and urban and suburban areas. In the West, they prefer coniferous forests. It is a partially migratory species, and almost all the populations of average and elevated altitudes migrate in winter towards the south of the United States and Mexico. During migration and in wintering areas, these sparrows are gregarious, forming numerous groups with individuals of the same species or some association with other species, such as the gorjicanelo (Sialia sialis) tile and the northeastern (Dendroica pinus) .

Throughout the year, the white-crowned sparrow looks for food in the soil, often in small groups. Their diet consists mainly of seeds. They also seek food frequently on shrubs and pastures directly. Especially in spring, these birds can be seen in the trees, even in the canopy, where they feed on plant buds and arthropods.

In early spring, in March, the first migrants return from their areas of overwintering, but the bulk of migrants return throughout April. Immediately, the males define their territories by singing. Reproduction begins in April, but for the majority from the end of that month and beginning of May onwards.

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