FILE PHOTO: Gihishamwotzi, 18, an endangered silverback high mountain gorilla from Sabyinyo family, rests atop trees inside the forest in the Volcanoes National Park near Kinigi, northwestern Rwanda, January 9, 2018. REUTERS/Thomas Mukoya/File Photo
FILE PHOTO: Gihishamwotzi, 18, an endangered silverback high mountain gorilla from Sabyinyo family, rests atop trees inside the forest in the Volcanoes National Park near Kinigi, northwestern Rwanda, January 9, 2018. REUTERS/Thomas Mukoya/File Photo