Richard Vigne, CEO of Ol Pejeta Conservancy, delivers a speech during the memorial service for the late world's only remaining male northern white rhino Sudan in Ol Pejeta Conservancy in Laikipia county, northern Kenya, March 31, 2018. Kenyan wildlife officials and global wildlife conservationists on Saturday converged at Ol Pejeta Conservancy in northern Kenya where a memorial service for the late world's only remaining male northern white rhino fondly named Sudan took place. (Xinhua/Lyu Shuai)
