The consultants he has hired to create his wildlife park were responsible for South Africa's Pilanesberg National Park, the game reserve attached to the resort and gambling complex of Sun City.

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Hotels have booked up around prime viewing locations, including the capital Lusaka, the Luangwa game reserve and Kafue National Park.

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In the 1990s, the first white rhinos were imported from South Africa and the results of the breeding programme saw the animals transferred to other reserves in Kenya, including Lake Nakuru National Park, Sweetwaters Game Reserve and Lewa Downs Conservancy.

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But in recent decades their habitat has been reclassified as part of the Namib-Naukluft National Park, Africa's largest game reserve, bringing them into greater contact with humans.

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Rich Laburn, of the Londolozi Game Reserve in South Africa's Kruger National Park, told BBC News there are simple things to look out for - the most obvious being paw prints.

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