Kenya Wildlife Services veterinarians take blood samples of a tranquilized 5-year-old lioness named Nyala as they set up a radio collar on her neck to track her pride's movements at the Nairobi National Park near Nairobi, Kenya, Jan. 23, 2017. Kenya Wildlife Service said the it now had six lions in the park fitted with satellite tracking devices inserted into special collars, in a project that began in 2014. (Photo/Agencies)
