Вечерняя овсянка Pooecetes gramineus

Large, drab, streaky sparrow of grasslands, second growth, and bare ground. Most distinctive in flight, when it flashes white outer tail feathers. Also note the thin white eyering and rufous shoulder (often hidden). Forages mainly on the ground. Song usually starts with a couple clear introductory notes, followed by a series of trills and chips.