this is a natural protected forest in east kalimantan, borneo. it's the site of an orangutan rehabilitation facility run by the c.o.p., the center for orangutan protection. the ngo has 13 staff and operates on donations from both home and abroad. the c.o.p. opened the facility in 2015. the ministry of environment and forestry lends them one square kilometer of land for free. that land is now home to 18 orangutans aged between 2 and 25 years old. happy, happy, happy. bobby, bobby, bobby. happy, happy, happy! >> some fled to inhabited areas after losing their homes to o developers. others have been kept as pets. the c.o.p. even has a full-time vet on the team. the orangutans spend every day training to return to the wild. the team had entered the trees with five youngsters aged between 2 and 4. they think the staff are their parents and cling to them happily. wild orangutans are raised by their mothers for around six years. they're taught how to find food, build nests, and other essential skills for living alone. but these five all lost their mothe