Orangutan Diaries is a nature documentary series on the BBC, which follows the lives of Bornean orangutans in the care of Lone Drøscher Nielsen, a member of the Borneo Orangutan Survival (BOS) foundation. The program tries to detail the threat that the orangutans face in day-to-day life. The presenters Michaela Strachan and Steve Leonard follow the careers of the orangutans daily to see what the centre has to deal with.