A herd of elephants are on their way to gather around a water hole at the Tsavo West National Park, near Voi, around 350 kilometres southeast of Nairobi, on February 16, 2017.
The Kenya Wildlife Services (KWS) conduct a large mammal aerial observation over the 48,656 square-kilometre Tsavo-Mkomkazi ecosystem that straddles the Kenya-Tanzania border, to gather data on elephants and other mammals, about their numbers, movement and water/pasture resources.  / AFP / TONY KARUMBA        (Photo credit should read TONY KARUMBA/AFP/Getty Images)
A herd of elephants are on their way to gather around a water hole at the Tsavo West National Park, near Voi, around 350 kilometres southeast of Nairobi, on February 16, 2017.
The Kenya Wildlife Services (KWS) conduct a large mammal aerial observation over the 48,656 square-kilometre Tsavo-Mkomkazi ecosystem that straddles the Kenya-Tanzania border, to gather data on elephants and other mammals, about their numbers, movement and water/pasture resources.  / AFP / TONY KARUMBA        (Photo credit should read TONY KARUMBA/AFP/Getty Images)

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