Congolese bonte tok Lophoceros fasciatus

A small though long-tailed hornbill that is frequently encountered as it flies singly or in groups over the canopy, between forest gaps, and over road cuts. Distinctive, with a bright white belly and a black head, body, wings, and tail, giving it a bicolored appearance. Similar to West African Pied Hornbill, but usually separated by range, and the sides of the tail are mostly white (instead of having white corners), and the bill is pale yellow with a dark red (rather than black) tip. Calls are a series of high-pitched whistles: “heu heu heu heu.”