Two-month-old orphaned baby elephant Ajabu is given a dust-bath in the red earth after being fed milk from a bottle by a keeper, as she is too young to do it herself, at an event to commemorate World Environment Day at the David Sheldrick Wildlife Trust Elephant Orphanage in Nairobi, Kenya Wednesday, June 5, 2013. Trust founder Daphne Sheldrick said at the event, which was attended by U.S. Ambassador to Kenya Robert Godec, that they are seeing an upsurge in orphaned elephants because of the poaching crisis occurring across Africa. (AP Photo/Ben Curtis)

A herd of adult and baby elephants walks in the dawn light as the highest mountain in Africa Mount Kilimanjaro in Tanzania, is seen in the background, in Amboseli National Park, southern Kenya, Monday, Dec. 17, 2012, . (AP Photo/Ben Curtis)

An ivory statue, right, lies on top of pyres of ivory as they are set on fire in Nairobi National Park, Kenya Saturday, April 30, 2016. Kenya's president Saturday set fire to 105 tons of elephant ivory and more than 1 ton of rhino horn, believed to be the largest stockpile ever destroyed, in a dramatic statement against the trade in ivory and products from endangered species. (AP Photo/Ben Curtis)

Two-month-old orphaned baby elephant Ajabu is given a dust-bath in the red earth after being fed milk from a bottle by a keeper, as she is too young to do it herself, at an event to commemorate World Environment Day at the David Sheldrick Wildlife Trust Elephant Orphanage in Nairobi, Kenya Wednesday, June 5, 2013. Trust founder Daphne Sheldrick said at the event, which was attended by U.S. Ambassador to Kenya Robert Godec, that they are seeing an upsurge in orphaned elephants because of the poaching crisis occurring across Africa. (AP Photo/Ben Curtis)

A ranger from the Kenya Wildlife Service (KWS) stands guard as pyres of ivory are set on fire in Nairobi National Park, Kenya, Saturday, April 30, 2016. Kenya's president Saturday set fire to 105 tons of elephant ivory and more than 1 ton of rhino horn, believed to be the largest stockpile ever destroyed, in a dramatic statement against the trade in ivory and products from endangered species. (AP Photo/Ben Curtis)

In this photo taken Friday, Sept. 4, 2015, members of a family of mountain gorillas named Amahoro, which means "peace" in the Rwandan language, take a rest in the dense forest on the slopes of Mount Bisoke volcano in Volcanoes National Park, northern Rwanda. Deep in Rwanda's steep-sloped forest, increasing numbers of tourists are heading to see the mountain gorillas, a subspecies whose total population is an estimated 900 and who also live in neighboring Uganda and Congo, fueling an industry seen as key to the welfare of the critically endangered species as well as Rwanda's economy. (AP Photo/Ben Curtis)

A cheetah yawns as others lie down at sunset in the Maasai Mara, Kenya, Monday, July 6, 2015. (AP Photo/Ben Curtis)

In this photo taken Friday, Sept. 4, 2015, a baby mountain gorilla clings to the back of its mother as she forages for food, on Mount Bisoke volcano in Volcanoes National Park, northern Rwanda. Rwanda has named 24 baby mountain gorillas in an annual naming ceremony that reflects the African country's efforts to protect the endangered animals, which attract large numbers of foreign tourists to the volcano-studded forests where they live. (AP Photo/Ben Curtis)

A white peacock flares out its plumage at the Giza zoo in Cairo, Egypt, Tuesday, March 17, 2009. White peacocks are often mistaken for albinos but are in fact a color variation of the Indian Blue peacock, and are considered rare. (AP Photo/Ben Curtis)

In this photo taken Sunday, Sept. 6, 2015, a baby crocodile lies on a felled tree branch in the waters of Lake Ihema in Akagera National Park, eastern Rwanda. After the 1994 genocide in Rwanda, returning refugees swept into the park with herds of cattle and wiped out the last lions but now the once-abandoned reserve on the border with Tanzania is drawing more tourists, reducing poacher incursions and getting local villagers more involved in conservation - it even re-introduced lions this year. (AP Photo/Ben Curtis)

In this photo taken Friday, Sept. 4, 2015, a member of a family of mountain gorillas named Amahoro, which means "peace" in the Rwandan language, takes a rest in the dense forest on the slopes of Mount Bisoke volcano in Volcanoes National Park, northern Rwanda. Deep in Rwanda's steep-sloped forest, increasing numbers of tourists are heading to see the mountain gorillas, a subspecies whose total population is an estimated 900 and who also live in neighboring Uganda and Congo, fueling an industry seen as key to the welfare of the critically endangered species as well as Rwanda's economy. (AP Photo/Ben Curtis)

In this photo taken Tuesday, July 7, 2015, an old male lion yawns in the long grass in the early morning, in the savannah of the Maasai Mara, south-western Kenya. (AP Photo/Ben Curtis)

A cormorant perches on a tree, from which hang the nests of weaver birds, as it looks out across Lake Ihema in search of fish to catch at dawn in Akagera National Park, Rwanda Monday, Sept. 7, 2015. (AP Photo/Ben Curtis)