Buff-browed Foliage-gleaner
Syndactyla rufosuperciliata
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".
ID text from Wikipedia, CC BY-SA 4.0
Lineated Foliage-gleaner
Syndactyla subalaris
The lineated foliage-gleaner is 17 to 19 cm (6.7 to 7.5 in) long and weighs 26 to 40 g (0.92 to 1.4 oz). The sexes have the same plumage. Adults of the nominate subspecies S. s. subalaris have a discontinuous light buff supercilium that extends to the nape; the rest of their face is blackish brown with small buff markings. Their crown is dark brown with thin buff streaks. They have a narrow ill-defined darker brown collar with wide buff streaks. Voice: The lineated foliage-gleaner's song is "a fast, accelerating series of 6–10 dry, harsh, scratchy, nasal notes...sometimes ascending and then descending, sometimes accelerating and then decelerating, ending abruptly". It has been put into words as "bzert, bzert, jzut, jzut-jj-jj-jj" and "anh, anh, anh-anh-anh-anhanhanhanh".
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Buff-browed Foliage-gleaner and Lineated Foliage-gleaner.