A medium-sized cuckoo of lowland and hill forest. Both sexes have a brown body, thick bill, and white stripe below the red eye. Male has distinctive black cap and black facial stripe. Feeds on fruit in the rainforest canopy. Similar to Long-billed Cuckoo, but Dwarf Koel has a shorter, thicker bill and white stripe on the face. Also from the larger female Pacific Koel by the smaller size and plain brown back. Call, a series of rising, single or double whistled notes.