The first sighting was in 2015, when a white giraffe, since named Omo, was found living in Tarangire National Park, in Tanzania. At the time it was believed that Omo was one of a kind, given that nothing like her had ever been seen, though other leucistic animals such as a waterbuck and an ostrich had been seen in Tarangire.
The second sighting was in March of 2016 when a white giraffe was found on the same Hirola Conservancy where the mother and calf were spotted. The rangers had gotten word of the giraffe from a nature photographer who had spotted the animal via aircraft. They later tracked the animal down to ensure it was healthy and feeding well.
There is no information available on how many of these giraffes are currently living in the wild, though the giraffe species as a whole is considered “vulnerable” by the International Union for Conservation of Nature and Natural Resources.