The Bateleur (Terathopius ecaudatus) is a medium-sized eagle known for its striking appearance and unique flight characteristics. It is the sole member of the genus Terathopius and is closely related to snake eagles. Adults are predominantly black with chestnut on the mantle, rump, and tail, and have distinctive red facial skin and feet. Juveniles are drab brown with paler scaling. The species is characterized by a very large head, small bill, large feet, short legs, long wings, and an exceptionally short tail, which is even shorter in adults.
Bateleurs are generally silent but may emit a loud, raucous "schaaaa-aw" when excited or during courtship. They also produce resonant barking calls and softer calls near the nest.
Bateleurs build small but sturdy stick nests in large trees and lay a single egg. They may take up to 7 to 8 years to reach full maturity. The species is known for its elaborate courtship displays.
Juvenile Bateleurs could be confused with brown snake eagles due to their similar size and proportions, but the latter have yellow eyes and longer legs.
Bateleurs have a generalist diet that includes carrion and a wide range of live prey, such as mammals, birds, and reptiles. They forage from flight, often descending in tight spirals to investigate potential food.
The Bateleur is classified as Endangered by the IUCN due to pronounced population declines caused by habitat destruction, pesticide usage, and persecution. The species is mostly confined to protected areas today.