Only the gazelle and red river hogs use this space, the storks holding area is behind the rocks in the back of the exhibit. It’s out of view for visitors.
@Sarus Crane I didn’t, a keeper told me, and when Will the saddle-billed stork was still alive I have seen keepers leading him to his separate holding. The white storks are in the same holding behind the rocks. Besides I have seen both the gazelle and hogs being led to this underground holding in the corner.