Small antbird of rainforest canopy; somewhat more common in forests with sandy soils. From below, note clean white underparts and heavy bill. Usually encountered with mixed-species flocks. Forages slowly along limbs and explores leaf clusters. Very similar to Todd’s Antwren and most safely separated from that species by voice. Song is an accelerating “bouncing ball” series, similar to Pygmy Antwren but with a harder quality and not falling in pitch at the end.