Description wikipedia

The wren-like rushbird (Phleocryptes melanops) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Argentina, Bolivia, Brazil, Chile, Paraguay, Peru, and Uruguay. 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. They have a buff-brown collar with few streaks. Their back is blackish with rich brown streaks and obvious white feather shafts. Their rump and uppertail coverts are also rich brown, with some blackish inclusions in the latter. Their tail's innermost pair of feathers are rich brown and the rest blackish brown with buffy to tawny tips; the last few centimeters of the innermost two pairs have bare shafts. Their wing coverts and wings are blackish; the former have wide chestnut tips and the latter chestnut and rufous edges that together form a wide band on the closed wing. Their throat is white, their breast and belly buffy whitish, their sides and flanks dull brown, and their undertail coverts a mix of tawny-buff and white. Their iris is brown to dark brown, their bill blackish to dark horn whose mandible sometimes has a paler base, and their legs and feet grayish horn. Juveniles are similar to adults but with narrow dark edges on their underparts' feathers. Subspecies P. m. schoenobaenus is significantly larger than the nominate and has a longer bill. It also has brighter upperparts and whiter underparts. P. m. brunnescens has a paler but more heavily streaked crown than the nominate. Its back is browner, its wingband paler, and its underparts paler and duller. P. m. loaensis is similar to brunnescens but has a somewhat darker and more chestnut wingband, and darker rump, sides, and flanks.