Stunning Sumatran endemic, now sadly in heavy decline due to poaching for the cagebird trade. Extirpated throughout much of former range, and now only present in more remote montane forests. Combination of dark body, bright white head, and black “mascara” is unique and unmistakable, but shy and reclusive habits make this bird more readily heard than seen; groups may suddenly erupt into a collective raucous cackling song which carries a considerable distance. Also gives a variety of hoots, rattles, and churrs.