Striking antbird with a conspicuous white throat and breast. Males have a black cap, brown back, and gray belly, while females have a cinnamon cap and underparts scaled black-and-chestnut. Note the bare yellowish eyering in both sexes. Found in humid forest, where it forages in the understory, exclusively around army-ant swarms. The song is a descending series of whistled notes, finishing with a few harsh sharp notes.