Roll's Partridge Arborophila rolli

Restricted to montane and foothill broadleaf forests between 500 and 2000 meters in the Batak Highlands of northern Sumatra. Forages in dense vegetation on the forest floor, often pairs, but also singly and in small groups. More easily heard than seen; listen for its song, a rapid and seemingly endless series of steadily rising hooting whistles. Pairs often duet. If seen, note the bright white cheek patch, black head, and black-and-brown-striped body; also note the bright red patch of bare skin around the eye, and curved black-and-white streaks running down the sides. Vocalizations and appearance similar to Sumatran Partridge, but separated by range and present species’ warm brown breast and more extensive white on the face.