orangutans are from the rainforests on the islands borneo and sumatra in southeast asia. they mostly live up in the trees. they eat fruit, leaves and bark and also insects and bird eggs. they drink water from rain that has been collected in leaves. orangutans are not comfortable on the ground since they have to push themselves along with fists. heavy adults move carefully through the trees, using their flexible feet to grasp the tree branches. smaller orangutans swing with more ease.