A rhino spotted during an aerial patrol by microlight for rhinos and potential poaching threats in the Waterberg district, some 350km north-west of Johannesburg, South Africa 9 September 2010. Over the past two years, after three decades of painstaking work to rebuild the country’s rhino population from a few hundred in the 1950s to around 21,000, black and white rhinos are severely under threat by a spike in poaching driven by demand in Asia for rhino horn.
