A tiny, stub-tailed flycatcher of humid tropical forest. Spends most of its time in the canopy, where overlooked easily, but at times descends lower, mainly at forest edges. Hops and clambers among small branches and in vine tangles, picking under leaves for insects. Note the tiny size, yellowish underparts, bold white eyebrow, and small stubby bill. Calls and song are plaintive, piping whistles, given singly or in descending series.