Smaller bustards
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Red-crested Korhaan L: 50 cm (20") Korhaans are small bustards that walk stealthily on the ground; the Red-crested Korhaan has a black belly and diagnostic white chevrons on a brown-and-black-mottled back . The male has a brown-grey neck and slaty cap, while the female is plainer . Only males have the red crest and this is almost always hidden . In flight it has an all-black underwing – Black-bellied Bustard has white panels in the underwing . It is a common resident in Kruger’s drier woodlands . Males have a distinctive song: a sequence of clicking “tic-tic” notes followed by a mournful piping series, “sweee-swee-sweee sweet” that accelerates to a crescendo . They will mate with several females and are not involved in nest care or parenting . They also indulge in an absurd display, flying almost vertically into the sky, then folding their wings and tumbling down as if shot, before surprisingly landing on their feet . Korhaans are preyed upon by several large eagles, and are sometimes taken by mammalian predators such as Leopards . Smaller bustards female male male in display 80 Black-bellied Bustard L: 58–65 cm (23–26") A large, lithe, bustard with black daubs on a mostly tan-coloured back . The male has a black belly, neck stripe, throat and face patch, but the female is uniform buff-brown from belly to head . In flight, males have a large white panel near the wingtip, whereas females have a series of white spots – the presence of white separating this species from the Red-crested Korhaan . It is an uncommon resident in tall grassland and grassy savannah, although seems to vacate the northern part of Kruger in summer (December–March) . The male’s strange display involves stretching his neck upwards and making a frog-like “kwoork” croak as he retracts his head into the shoulders, like a guilty child, followed by a “grrrr” growl and champagne-cork “pop” as it lifts it again . This looks as ridiculous as it sounds! Males also perform an aerial display with the wings held back rigidly, and with its throat puffed out . This bustard occasionally falls prey to Martial Eagles (page 188) and Leopards . BIRDS OF BROADLEAVED WOODLAND AND CAMPS female male 81 ...