Small olive-yellow tanager with a dingy brown face and crown and a yellow eyebrow. Found in humid elfin forest in the southern Peruvian Andes, where it forages singly or in pairs, often joining mixed-species flocks with other tanagers, flowerpiercers, and hemispinguses. Compared to the smaller Citrine and Pale-legged Warblers, note the blunter gray bill (black and thin in the warblers), larger size, and bolder behavior.