Small warbler-like bird with a gray head, yellowish-green body, and varying amounts of white around the eye; lacks the well-defined white “spectacles” of typical white-eyes. Birds in the montane regions of far western and far eastern Java have a dark patch between the eye and the base of the bill, and minimal white on the face (a full thin eyering in eastern birds, and a white crescent under the eye in western birds), while birds in central Java have a large but poorly-defined white patch around the eye. Forages actively in wooded and forested areas from foothills to mountaintops, often in pairs or groups. Joins mixed-species flocks. Song is a bright series of whistled notes; calls include rattling, high-pitched “tchrr”s and sharply falling whistles.