Dull-capped Attila

The white-eyed attila is 19 to 22 cm (7.5 to 8.7 in) long and weighs 40 to 45 g (1.4 to 1.6 oz). The sexes have the same plumage. Adults of the nominate subspecies have a grayish rufous-brown head. Their upperparts are mostly rufous-brown with a bright cinnamon-rufous rump and tail. Their wings are mostly rufous-brown with blackish greater coverts and primaries. Their chin is faintly grayish. Their throat and underparts are mostly cinnamon-rufous that is paler on the belly. Subspecies A. b. nattereri is overall darker than the nominate and has a crown tending to sepia. Both subspecies have a pale yellowish white iris, a horn-colored maxilla, a pinkish tinged horn-colored mandible, and blue-gray legs and feet.

Subspecies A. b. nattereri is the more northerly of the two. It is found from extreme southeastern Colombia south into northeastern Peru's Department of Loreto and east through Brazil along the Amazon almost to the Atlantic. The nominate subspecies is found from Loretta in Peru south into northern and eastern Bolivia and east into southwestern Brazil to southwestern Mato Grosso. Though some sources place nattereri in Ecuador as well, the South American Classification Committee of the American Ornithological Society has no records in that country. The white-eyed attila inhabits riverine landscapes. In the Amazon Basin it is found in várzea and other swampy forest, typically on river banks and islands. Further south in the Pantanal it is found in gallery forest. In elevation it reaches 150 m (500 ft) in Colombia and 500 m (1,600 ft) in Brazil.

The white-eyed attila primarily feeds on large arthropods and also includes fruit in its diet. It typically forages singly or in pairs from the forest's understory to midstory. It sometimes joins mixed-species feeding flocks. It perches quietly and takes prey and fruit from foliage and branches while briefly hovering after a short sally.