Xingu Scale-backed Antbird

The Xingu scale-backed antbird is 12 to 13 cm (4.7 to 5.1 in) long and weighs 14 to 19.5 g (0.49 to 0.69 oz). Adult males of the nominate subspecies are mostly gray; their upperparts are darker than their underparts. They have a white patch between the scapulars. Their lower back has white-edged black patches that give it its English name. Their wings and tail are black with white edges and tips on many feathers. Adult females have a warm brown crown and a gray face. Their upperparts are warm brown and their underparts are gray. Their throat is white. Voice: The Xingu scale-backed antbird's song is "a series of long upslurred notes, which are frequency-modulated in an even pattern". Its calls include "a twitter formed by a short...high-pitched series of clear, almost tinkling, musical notes that descends slightly in frequency", "a descending chirr", and a "raspy series of 3–4 cheery, cheery, churry, churry notes".