A medium-sized, long-tailed bird of lowland and foothill forest in the northern and central Philippines, where it is the only drongo in range. Entirely black with glossy blue upperparts and streaks on the head and neck. Tail flares out at the tip. A white-bellied race of the central Philippines may represent a separate species. Similar to Philippine Drongo-Cuckoo, but larger, with a thicker bill and upturned tail tips. Song is a complex mixture of grating scolds and loud whistles.