Young orangutans getting the hang of it at Singapore Zoo Two young orangutans dangle over the head of their exhausted mum. Pictures: Picture Media Source: Supplied IT's not just a human problem. This exhausted orangutan mum can't catch a break as her babies go bananas. Tired and defeated, she can only try to get some rest as they dangle playfully above her head. A young orangutan hangs on carefully. And at Singapore Zoo, there's plenty of space to hang around. With the world's largest captive colony of orangutans, the good news for poor mum is it wouldn't be hard to find an ape-sitter. A more daring effort. Taking an upside-down view.