Striped Treehunter
Thripadectes holostictus
The striped treehunter is 20 to 21 cm (7.9 to 8.3 in) long and weighs 38 to 49 g (1.3 to 1.7 oz). It is a bulky, dark furnariid with a thrush-like shape. The sexes have the same plumage. Adults of the nominate subspecies T. h. holostictus have a mostly blackish-brown face with buff streaks, some of which merge to form a supercilium. Their lores are grizzled blackish brown and buff. Their crown is blackish brown with strong buff streaks. Their back is dark brown with buff streaks and their rump dull dark brown that blends to reddish brown uppertail coverts. Voice: The striped treehunter's song is "a fast series of nasal chattering notes, slightly descending and decelerating". Its call is a sharp "kwi-di-dik".
ID text from Wikipedia, CC BY-SA 4.0

Uniform Treehunter
Thripadectes ignobilis
The uniform treehunter is 19 to 20 cm (7.5 to 7.9 in) long and weighs between 48 and 51 g (1.7 and 1.8 oz). It is the smallest, darkest, and shortest-billed member of its genus. The sexes have the same plumage. Adults have a vague narrow supercilium and wide eyering that are dull tawny-rufous, blackish brown lores grizzled with pale buff, blackish ear coverts with narrow ochraceous-buff streaks, and a dark brown malar area with lighter blurry streaks and spots. Their crown is dark brown with vague pale spots on the forehead. Their back and rump are slightly paler and redder than the crown. Voice: The uniform treehunter's song is a rather high-pitched "series of 6-8 sharp 'kik' or 'kyip' notes".
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: Striped Treehunter and Uniform Treehunter.