Buff-browed Foliage-gleaner

The buff-browed foliage-gleaner is 17 to 18 cm (6.7 to 7.1 in) long and weighs 22 to 33 g (0.78 to 1.2 oz). It is a medium-sized furnariid with a thick, slightly upcurved, bill. The sexes have the same plumage. Adults of the nominate subspecies S. r. rufosuperciliata have a tawny-buff eye ring and a lighter supercilium that extends to the nape; the rest of their face is brownish with small buff markings. Their crown is dull olive-brown with vague whitish streaks at the rear, and their back, rump, and uppertail coverts are plain olive-brown. Voice: The buff-browed foliage-gleaner's song apparently varies little despite its disjunct distribution. It is "a loud, fast, accelerating series, 'kuh-kuh-kuh-kihkihkihkikkikkikku', starting faintly and ascending, then louder and quavering or descending". One call is "kssr" and its alarm call is "set" or "setet".