in a copy of the masterplan that i have seen there are not too many new species being brought into the collection amongst new species mentioned include, the aforementioned gorilla, Nile lechwe, gelada, hamadryas baboon, shoebill, hippo (with a question mark next to it), Fishchers and violet touraco, trumpeter hornbill, wattled crane, De Brazza monkey (guenon sp), white crowned mangabeys, Himalayan pheasants as well as scarlet ibis but they are mentioned in the Madagascar zone, so i think they meant sacred ibis.