The birds here can freely pass between this space and the main free-flight area of JW. I have seen Mandarin Duck and Green Junglefowl here in the past as well.
@Cat-Man Having seen the exhibit for myself, the monkeys have a TON of height in this enclosure as well as a complex layout with the vines, rockwork and natural substrate areas. The langur cam on Bronx Zoo's website shows this off better.