Rufous-browed Hemispingus

The rufous-browed hemispingus is 15 to 16 cm (5.9 to 6.3 in) long and weighs 26 to 33 g (0.92 to 1.2 oz). The sexes have the same plumage. Adults have a mostly black head with a very wide cinnamon-rufous supercilium that extends to the nape. Their upperparts are dark slate and their tail an even darker slate. Their flight feathers are like the tail and the wing coverts are a paler gray. Their throat, breast, sides, and upper belly are cinnamon-rufous. Their lower belly, flanks, and undertail coverts are dark gray with a slight brown tinge. They have a brown iris, a black maxilla, a blue-gray mandible, and brown legs.

The rufous-browed hemispingus is found intermittently on the eastern slope of the Peruvian Andes from central Amazonas state south to southern Huánuco Department. It inhabits elfin forest and humid montane forest and especially favors patches of Chusquea bamboo. In elevation it ranges from 2,250 to 3,500 m (7,400 to 11,500 ft).

The rufous-browed hemispingus' diet has not been studied but is known to include insects, seeds, and berries. It forages from the ground up to about 2 m (7 ft) above it, flicking its tail while hopping along limbs or on the ground. It typically is seen singly, in pairs, and in small groups thought to be families, and also often joins mixed-species feeding flocks.