Pooecetes gramineus
The Vesper Sparrow (*Pooecetes gramineus*) is a charming and easily identifiable songbird of North American grasslands, renowned for its distinctive evening song. This medium-sized sparrow measures approximately 13-16 cm (5.1-6.3 in) in length with a wingspan of 24-28 cm (9.4-11 in) and weighs between 18-28 grams (0.6-1.0 oz). Its plumage is predominantly streaky brown above with a paler, streaked breast, but two key field marks set it apart: bright white outer tail feathers, prominently flas...
Primarily found in open, dry habitats including native grasslands, prairies, pastures, hayfields, sagebrush plains, and agricultural field margins, often on sandy or gravelly soils. They prefer areas with scattered forbs, short to medium-height grasses, and occasional shrubs for perching.
Primarily insectivorous during the breeding season, consuming a variety of insects like grasshoppers, beetles, and caterpillars; shifts to a granivorous diet of seeds, especially from grasses and weeds, during fall and winter.
Vesper Sparrows are diurnal, spending most of their active hours foraging on the ground with a characteristic upright posture, often walking or running between short hops. Males are highly territorial during the breeding season, delivering their distinctive, clear, whistled songs from elevated pe...
The Vesper Sparrow boasts a wide breeding range across North America, extending from central and western Canada, through the Great Plains and intermountain west of the United States, and eastward into the Great Lakes region and parts of the northeastern U.S. and southern Ontario. In the western p...
Least Concern
- The name "Vesper Sparrow" comes from its tendency to sing its melodious song during the evening, particularly at dusk, much like a vesper bell. - Its most distinctive field mark is the bright white outer tail feathers, which are conspicuously flashed when the bird flies. - Despite their commona...