How's Pusung doing? Has he sired any offspring yet?
We have another juvenile Sumatran male (Pusung's son i believe) here in Singapore. He's about 10 years old and related to all the female Sumatrans we have, so he should be heading off somewhere in a few years time. Since OZ zoos concentrate on Sumatran subspecies, there's a chance he might be heading there in the near future.
just been looking at the south australian zoo's web site. The chimp plans for Monarto are impressive.