Not officially on diaply yet. Taken around 2 weeks ago, this was the first time the langurs were released into the canopy. At that period of time they were charging at several staff that were not keepers.
@aw_101 The Canopy is a walk-in enclosure that has Siamangs, Doucs, Javan langurs, and Philippine Spotted Deer. The path is an elevated walkway. The Siamangs are separated by an electric fence along the ground, while the deer and langurs share the same area. From my talk with the keeper today, it appears that the Javan Langurs will not be in there at the same time as the Doucs, but will be rotated at different times of the day. It might have to do with the Javan langur being rather aggressive.