Чагарниця червонодзьоба Melanocichla calva

Thickset, dark-gray-brown laughingthrush with a bright-candy-red bill, broad blue moustache patches, and a sickly-looking bare yellow crown. Endemic to the highlands of north-central Borneo. Found in primary submontane and montane forests. Forages in small groups or with mixed flocks, clambering and hopping about in vines and tangles of vegetation in middle levels of forest. Unlike Sunda and Chestnut-hooded laughingthrushes, Bare-headed does not readily approach people. Song is an owl-like series of hollow hoots, interspersed with upswept yelps when duetting.