e. s. canicollis, male, sweetwaters game reserve, kenya male maasai mara, kenya e. s. erlangeri, female, serengeti, tanzania e. s. erlangeri, male, serengeti, tanzania it rather small bustard, 48 61 centimetres (19 24 in) long. tawny brown above , on breast , white on belly, cream-coloured legs; juveniles have light brown necks , heads, , adults have blue-grey necks. adult female has grey crown, brown , buff line below eye, , black speckling on throat. adult male has black crown, black lines on white cheeks, black throat patch, , pinkish-red bill. call, given in morning , late evening, has been described loud, guttural k whuka whuka, k wuka whuka..., or k warrak, k warrak... this species seen in pairs or family groups, young stay parents longer of other bustards in region.