Tiny short-tailed ground-dweller, restricted to foothill and montane forests on Java. Favors areas with dense, tangled undergrowth, in which it bounces around actively. Olive-brown with a gray head and chest. Black line through the eye gives this little bird a strongly “eyebrowed” appearance. Due to size and dense habitat, this tiny warbler can be difficult to track down; listen for its song, a tumbling, jumbled series of beautiful high-pitched notes. Also note call, a dry rattling trill.