In this photo supplied by Wildlife Conservation Society (WCS) elephants drink water at a watering hole near Mbamba Village, in the Niassa game reserve, in an area larger than Switzerland it is one of Africa's largest wildlife preserves in Mozambique, Sept. 26, 2016. The Niassa reserve on Saturday June 15, 2019, is marking a year without a single elephant found killed by poachers, which experts believe is because of a new rapid air intervention police force to patrol an area where thousands of the animals have been slaughtered in recent years, according to the New York based Wildlife Conservation Society which runs the reserve with Mozambique's government. (Michael D. Kock / Wildlife Conservation Society via AP)
Elephants drink water at a watering hole near Mbamba village in Mozambique's Niassa game reserve. Wildlife Conservation Society via AP

African wildlife park marks one year without elephant poaching