A slender, medium-sized bird from forested streams in the mountains. White bill, black wing with white patch, and tail, white in the base, black at the end. Male has black head and chest with white cheek and small stripe behind the eye. Female has a white chest with black face, throat and crown stripe. Occurs in the same habitat as Torrent Flycatcher, but Torrent Lark is larger with a black back and a black face. Call, a harsh, grating “zeeeg!”.