Wren-like Rushbird

The wren-like rushbird is 13 to 14 cm (5.1 to 5.5 in) long and weighs 11 to 16 g (0.39 to 0.56 oz). It is a small furnariid whose plumage closely resembles that of the wholly unrelated marsh wren (Cistothorus palustris). It has a longish slightly decurved bill. The sexes' plumages are essentially alike though females are slightly paler than males. Adults of the nominate subspecies P. m. melanops have a wide buff supercilium, grayish lores, a dark brown band behind the eye, mottled dark brown ear coverts, and a buff malar area. Their crown is blackish with wide brown streaks. Voice: In much of its range, the wren-like rushbird's song is a "repeated mechanical ticking, repeated several times per second, sometimes for several minutes, often ending with trill like that of cicada". One author describes it as sounding "like an idling motor, with the throttle occasionally opened". The song of the Andean population is "similar but with more strident tones".