Small, slender sparrow with short bill and long, narrow tail. Plain grayish breast, rusty cap, and black eyeline in breeding season. Not as bright in winter, but still shows a brown cap and dark eyeline. Juveniles are extensively streaky. Common and widespread throughout most of North America. Usually found in open woodlands, scrubby areas, or even in suburban settings. Often gathers in flocks in fall and winter. Visits feeders. Frequently heard singing a fairly dry trill. Compare with similar Clay-colored, American Tree, and Brewer's sparrows, but look for Chipping Sparrow's gray rump and dark eyeline.