@Rizz Carlton, it is possible. I post the picture months after the actual visit. Was the Siamang exhibit close to the Kloss' Gibbon ? We also saw the Kloss Gibbon at Ragunan, but I am pretty sure that they were on exhibit at Taman Safari.
Their exhibit at the Primate Centre of Taman Safari Bogor are just separated by a path to an storage room, in the middle just across the tall colubid and macaques enclosures.
