Looking at the photo's you've put up, this building seems to be amazing!
Are the ducks the only free-ranging species at the moment? If so then I imagine there'll be plenty more in the future as it's an awfully big space to fill!
Are they meant to be above the acouchis/arapaimas? I seem to remember that was where they were labelled. There was also one of the squirrel monkey island, which confused me a little!