The Duke of Cambridge assists rangers in northern Kenya

Prince William, Duke of Cambridge, Royal Patron of Tusk and President of United For Wildlife, assists rangers in northern Kenya to move "Matt", a tranquilised bull elephant, whilst a wildlife vet fits his new satellite tracking collar to monitor and protect him from poachers. The Duke co-piloted the aircraft during the darting exercise whilst on a private visit to see first-hand some of the conservation work supported by Tusk.on March 24, 2016 in Lewa, Kenya. This anti-poaching and research device plays a vital part of the conservation work supported by Tusk. (Photo by Chris Jackson/Getty Images)