Olive-backed Foliage-gleaner

The olive-backed foliage-gleaner is 18 to 19 cm (7.1 to 7.5 in) long and weighs about 27 to 40 g (0.95 to 1.4 oz). It is a fairly large member of its genus and has a heavy bill. The sexes have the same plumage. Adults of the nominate subspecies A. i. infuscatus have a mostly blackish brown face with faint reddish streaks on the ear coverts and grizzled blackish brown and buff lores. Their forehead is blackish brown with wide but inconspicuous rufescent brown streaks that become faint on the dark brown crown. They have a vague dark brown collar with faint light brown streaks. Voice: The olive-backed foliage-gleaner's song is "a loud, fast, staccato, slightly descending rattle, 'tchi-r-r-r-r-r-r-r-r-r-r-r-r-r-r-r' ". Its calls include "a sharp 'chik-uh' or 'chík-wuk' " and "chik-qwaah".