Luminous small bird with bright yellow underparts and a lemon-colored brow with thick black borders. Inhabits mid- to high-altitude broadleaf forests, often in openings or edges. Forages close to the forest floor, often with other species in large mixed flocks. Superficially similar to a brightly-colored leaf warbler, but lacks wingbars, has a more contrasting head pattern, and is structurally larger-headed and smaller-billed. Gives quick chirps and chips. Song is a descending series of sharp notes which ends in a brief accelerated burst.