Kori Bustard Ecology East Africa 2027: Africa’s Heaviest Flying Bird and the Lek Display
The kori bustard is Africa’s heaviest flying bird — the adult male reaching 7.0 to 19.0 kilograms and 120 to 150 centimeters body length, with a wingspan of 230 to 275 centimeters. The kori bustard is simultaneously the most frequently requested “non-Big-Five” bird photograph from the Tanzania and Kenya safari visitor and one of the most behaviorally complex birds in the East African savannah — the male’s breeding display being the largest and most visually elaborate intra-specific display of any African ground bird. The kori bustard’s field identification: the grey-and-brown vermiculated upperparts , the white neck sides with fine black stripe-streaks, the black-and-white wing patches visible in flight , and the male’s distended neck . The kori bustard’s distribution in the 2027 safari circuit: Tanzania and Kenya .
The Kori Bustard’s Lek Display: the Balloon Neck, the Wing Spread and the Booming Call
The kori bustard’s breeding display is the most spectacular ground-bird display in East Africa — the adult male’s “lekking” behavior consists of 4 simultaneous postural elements that must be seen in the field to be fully appreciated. The 4 display elements: Element 1 — the neck inflation and the white neck feathers completely obscure the normal neck’s grey-brown color, the neck appearing from a distance as a large white ball attached to the bird’s body]; Element 2 — the tail fan ; Element 3 — the wing spread ; Element 4 — the boom call . The lek structure: the kori bustard lek in the Serengeti and Amboseli is typically associated with a specific open-grassland location used for 8 to 15 years continuously . The female’s selection: the observing female — the 2018 to 2022 Amboseli kori bustard radio-telemetry study found that 75 to 85 percent of all matings at the observed Amboseli leks were achieved by the single dominant male at each lek, the secondary male’s copulation rate at 8 to 15 percent and the remaining males at 0 to 5 percent each.
Kori Bustard Foraging Ecology: the Omnivore’s Diet and the Oxpecker Parallel
The kori bustard is a dietary generalist : the primary foods in the 2027 Serengeti and Amboseli diet studies — grass seeds and the seed heads of the dominant grass species ; the arthropod component contributing 20 to 35 percent of the dry-weight diet; the vertebrate prey ; and the gum and sap . The kori bustard’s insect-following behavior: the kori bustard’s association with the large mammal herds is the functional equivalent of the cattle egret’s herding-following behavior — both species exploit the “flush” effect of the large mammal’s passage through the grass. The kori bustard’s water source: the kori bustard is largely independent of free water in the dry season , but will drink if water is within 2 to 5 kilometers of the home range center, the drinking event at the Amboseli’s Enkongo Narok waterhole and the Serengeti’s Seronera waterhole producing one of the safari’s most unusual large-bird close-approach opportunities.
Best Kori Bustard Viewing 2027: Serengeti, Amboseli, Ngorongoro and Masai Mara
The kori bustard viewing guide for the 2027 Tanzania and Kenya safari circuits: the kori bustard is one of the East African open-grassland’s most easily observed large birds , but the lek display requires the correct timing and the correct site . Tanzania’s best kori bustard sites 2027: the Ndutu plains’ short-grass zone ; the Ngorongoro Crater’s Gorigor Swamp and Lerai-to-Mandusi zone ; and the Serengeti’s Naabi Hill and Gol Kopjes zone . Kenya’s best kori bustard sites 2027: the Amboseli’s Ol Tukai short-grass plains ; the Masai Mara’s Musiara and Paradise Plains ; and the Laikipia Plateau’s open grassland .