About Myrmotherula multostriata P.L.Sclater, 1858
The Amazonian streaked antwren (Myrmotherula multostriata P.L.Sclater, 1858) measures 9 to 10 cm (3.5 to 3.9 in) in length and weighs 7.5 to 9 g (0.26 to 0.32 oz). It is a small bird with a very short tail. Adult males have a black and white streaked face; their crown, back, and rump are black with white streaks, and they have a large white patch between the shoulders. Their tail is black, with white edges and white tips on the feathers. Their wings are black, with white tips on the coverts and white edges on the flight feathers. Their throat, breast, and belly are white, while their flanks and crissum are grayer; black streaks run from the throat across the flanks and belly. Adult females have a buff face, and a cinnamon-rufous crown and nape marked with black streaks. Their breast and sides are buff, and the rest of their underparts are white with a buff tinge; thin black streaks are spread widely across their underparts.
The Amazonian streaked antwren occurs locally in eastern Colombia and southern Venezuela. Its range extends south and east from this area through eastern Ecuador and eastern Peru, into northern Bolivia and central Brazil, reaching as far east as Maranhão and Tocantins and as far south as Mato Grosso. There is also an apparently isolated population in Mato Grosso do Sul, Brazil. The species is found almost entirely south of the Amazon River, with the exception of the lower reaches of the Rio Negro basin, a northern tributary of the Amazon. It inhabits the understorey and mid-storey of lowland evergreen forest, primarily várzea and igapó, as well as shrubby secondary forest. It occurs almost exclusively near water, in thickets and vine tangles along rivers, streams, and oxbow lakes. In terms of elevation, it ranges from sea level to approximately 550 m (1,800 ft), but only reaches around 300 m (1,000 ft) in Colombia and Ecuador.
