Rare antwren restricted to a small area of the eastern Andes in northern Peru. Note the black cap, striped face, white wingbars, and lack of rufous in the wing. Female has a buffy tinge on her face and throat. While several other antwrens in Peru share similar plumage features, none of them occur in the limited range of this species. Inhabits the canopy of stunted cloud forest, especially on ridgetops. Song starts with a few rising notes and ends with a descending trill.