The Song Sparrow is an extremely common, widespread, and geographically variable bird. There are 31 recognized subspecies, the most of any North American species. All song sparrows feature a long, rounded tail; relatively short, rounded wings; a grayish or white supercilium; a pale central crown stripe; and a conspicuous, broad, dark malar stripe separating the white moustachial stripe from the white chin and throat. Their back’s base color varies, but it is always streaked with darker rufous brown or dark brown. The wings and tail are rusty brown or dark brown. The rump is brown and streaked. The whitish breast and flanks are usually boldly streaked or spotted, the spots usually coalescing into a prominent blotchy spot at the center of the breast. Ear coverts are gray or gray buff with dark edges. Both sexes look alike.
Sparrows are normally associated with man and his domesticated animals. The sparrow population has decreased not because of erradication, but because of the decline of horses and increase in use of automobiles and mechanized farming. Sparrows are considered a pest because of their haphazard disposal of wastes and destruction of grain and other crops.