Western Bird Guide: Birds of the Rockies and West to the Pacific

by Charles K. Reed

WESTERN VESPER SPARROW.

540a. Poœcetes gramineus confinis. 6 inches.

The chestnut shoulders and outer white tail-feather will distinguish this from any others of the sparrows, and the sides are more of a gray color than the eastern variety. Its habit of singing later in the evening gave it the name of “Vesper.” Found on the Pacific coast, from British Columbia to Mexico. Nest is made of grass, placed in a depression on the ground. Four dull white eggs, blotched with brown (.80 × .60).