The Kori Bustard (Ardeotis kori) is a large bird native to Africa. It is a member of the bustard family. The male Kori Bustard may be the heaviest living animal capable of flight. This species, like most bustards, is a ground-dwelling bird and an opportunistic omnivore. Male kori bustards, which can be more than twice as heavy than the female, attempt to breed with as many females as possible and then take no part in the raising of the young. The nest is a shallow hallow into the earth, often disguised by nearby obstructive objects such as trees. The specific epithet kori is derived from the Tswana name for this bird - Kgori.
Kori bustards spend most of their time on the ground, with up to 70% of their time being on foot. This bustard is a watchful and wary bird. Their behavior varies however, and they are usually very shy, running or crouching at the first sign of danger; at other times they can be completely fearless of humans. They have a hesitant, slow manner of walking, and when they detect an intruder they try to escape detection by moving off quietly with the head held at an unusual angle of between 45° and 60°. Being a large and heavy bird, it avoids flying if possible. When alarmed it will first run and, if pushed further, will take to the air on the run with much effort, its wings making heavy wingbeats.