Long-tailed corvid of Borneo’s hilly and montane forests; the only treepie in its range. Note stout black bill, black wings with white patch, and warm buffy brown underparts and face. Social and noisy; often encountered in flocks as individuals keep in contact with one another via an assortment of squawks, rasps, and clinking metallic notes. Can be fairly tame, allowing close approach, especially around trails and campsites.