Burchell's Zebra Burchell-Zebra Equus quagga burchelli plains zebra Equidae BUZE EQUQUA Mammal Southern Africa South-west Safari Nxai Pan National Park Botswana November africa african animal animals black conservation game grass grassland meadow migration outdoors pattern savanna savannah stripe striped travel white wild wilderness wildlife Yellow-billed Oxpecker Buphagus africanus Buphagidae pasture