Adults have dark-streaked olive-brown upperparts and a light brown breast with fine streaks, a white belly, and a white throat. They have a brown cap with a grey stripe in the middle, olive-brown wings, and a narrow tail. Their face is grey with brown cheeks, a buffy mustache, and a brown line through the eye with a narrow eye ring.[3] Males and females are alike in plumage.[2] They are somewhat similar in appearance to the song sparrow although smaller and trimmer with finer breast streaks.[3]