Description wikipedia

The grey-backed tachuri (Polystictus superciliaris) is a species of bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers. It is endemic to Brazil. The grey-backed tachuri is 9.5 to 10 cm (3.7 to 3.9 in) long and weighs about 6 grams (0.21 oz). The sexes have the same plumage. Adults have a gray crown with a short crest; the crown's white center is mostly hidden. They have a short white supercilium, a white eye ring, and a thin blackish line through the eye on a face that is otherwise thinly striped with black and white. Their upperparts are brownish gray. Their wings are dark dusky brown with slightly paler brown edges on the flight feathers and tips on the wing coverts; the last show as two wing bars. Their tail is dusky. Their chin is whitish. Their throat and underparts are mostly pinkish buff that becomes white on the lower belly. Juveniles have a cream-colored belly. Both sexes have a dark brown iris, a black bill, and black legs and feet. The grey-backed tachuri has a disjunct distribution in eastern Brazil. One population is found in central Bahia. Another is found from northern Minas Gerais south into northern Paraná. It also occurs locally in scattered locations north and west of those main populations. It primarily inhabits campos rupestres, a rocky grassland biome with scattered shrubs. It also occurs in brushy deserted pastures and, at higher elevations, grasslands and brushy edges of cloudforest. In elevation it ranges from 900 to 2,300 m (3,000 to 7,500 ft) but is mostly found below 1,700 m (5,600 ft).