Dark-winged Canastero

The dark-winged canastero is 14.5 to 16.5 cm (5.7 to 6.5 in) long and weighs 17.5 to 24 g (0.62 to 0.85 oz). It is a medium-sized canastero. The sexes have the same plumage. Adults have a light gray supercilium and an indistinct brownish line behind the eye in an otherwise dull buff face. Their crown, nape, and back are medium to dark brown and their rump and uppertail coverts rufous brown. Their wing coverts are blackish with narrow rufous edges and their flight feathers blackish. Their tail's outermost pair of feathers are rufous and the rest blackish. Voice: The dark-winged canastero's song "may begin with a series of introductory notes, but these apparently are not always given. The song then...accelerates and ascends, before descending and decelerating near the end". Its call has been described as a "wheezy, earthcreeper-like whee" and as a "rising, penetrating shreep! or whee". It usually sings from atop a bush or small tree.