Slender and drab songbird of open country. Usually grayish above and streaked below, but some lack streaks in breeding season. Distinguished from similar-looking (unrelated) sparrows by thin bill and lanky appearance with long legs. Walks on the ground with jerky motions and frequently bobs tail. Flocks are often heard as they pass overhead or flush from a barren field. Look for flashing white outer tail feathers in flight.