Greenish-backed, yellow-bellied, gray-headed, and rufous-crowned, this colorful small warbler closely resembles a Mountain Tailorbird; look for a significantly shorter bill and more extensive rufous on the crown. Forages actively and sometimes socially in thick, dense undergrowth in mid- to upper-elevation forests, often in stands of bamboo. Song consists of high thin “tseeeee” and “tsi-leeeeee” notes, as well as a lower-pitched rollicking sputter.