When I visited the zoo in 2008 there was a 41 year-old and a 48 year-old chimp that were both moving extremely slowly in their old age. That might explain why the exhibit was still quite lush at that time.
This former outdoor Chimpanzee exhibit is currently still vacant and is going to be renovated soon.The former indoor chimp exhibit is now being used by JJ a solitary male Bornean Orangutan who prefers the company of his keepers as opposed to other orangs.JJ basically has his own one bedroom apartment his behind the scenes his holding area includes a TV,fish tank and books.He also plays games and paints often with his keepers.It is unclear if the zoo intends on acquiring Chimps or perhaps a new species to be housed in the Kingdom of the Apes building.