South Africa's national parks have put in place various measures to combat rhino poaching which threatens the existence of the endangered animal. Isaac Phaahla, media specialist for South African National Parks, a leading conservation authority in the country, said they have been constantly revising their strategies to fight poachers, who keep changing their tactics. One of the measures adopted recently is the use of helicopters that carry rangers and deploy them whenever required to arrest poachers. South Africa is home to the largest rhino population in the world, accounting for 80 percent of the world's total. A total of 448 rhinos were killed in South Africa for their horns last year as against 451 in 2021.