Kenya Wildlife Services scientists use a radio antenna to scan for the signal from a radio-collar fitted on the neck of a 5-year-old lioness named Nyala to check on her location 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)
