Birth of a new White Cheeked Gibbon on 14th September Rare white cheeked gibbon born at Adelaide Zoo | Adelaide Now
the baby has been named Nhu which apparently "is Vietnamese and means ‘everything according to one’s wishes’." (information courtesy of the Zoos SA latest newsletter)
Does that bring it to number 3? Or are you talking about the one that was born a couple of months ago? (which was the second one to live past a month).