The cheery and sociable house sparrow is more closely associated ... exhibits extensive geographic variation, with clinal variation: larger birds with shorter appendages in colder climes, darker ...

Juvenile: Brown and buff head; streaked underparts. The white-throated sparrow has a dark bill, prominent white throat, and yellow supraloral. Immature simi­lar to immature golden-crowned ...

At that season it is frequently mistaken for the chipping sparrow, but the 2 rarely overlap in winter. The American tree sparrow often occurs in flocks of up to 50 birds. In habitat and behavior ...

This woodland sparrow of the East frequents feeders or feeds along woodland edges, darting for cover if disturbed. It may reemerge in response to pishing and can occur in large flocks (up to 150 ...

Brownish back streaked with dark brown; breast, sides, and flanks grayish brown. Bill dusky above, pale below. Adult: yellow patch tops black crown; less distinct in winter. Immature: less ...

This sparrow (mono­­typic genus) feeds on bare or sandy ground. When flushed, it flies to a high perch. Few other sparrows are likely to fly high overhead during daylight. They call both when ...

Usually easy to recognize, but due to considerable variation may be confused with certain non-troglodytids (e.g., rufous-crowned sparrow). Status and Distribution Common. Breeding: most vegetated ...

This story appears in the September 2016 issue of National Geographic magazine ... which also held traces of at least two other mice and a sparrow’s bones and claws. “That means the bird ...