A distinctive small songbird with olive upperparts, a bright yellow underside, and a diagnostic head pattern: chocolate-brown head crest with indistinct white flecking, black mark between the bill and the eye, and white brow. Singles, pairs, or small groups frequently join mixed-species flocks in forests, edges, and cultivated areas in lowlands and lower hills. Restricted to the Lesser Sundas. Vocalizations include soft chattering calls, thin “tsip” notes, harsh “kit-up” calls, and a complex warbled song comprising whistled and whipping notes.