One of the photos in the link shows a tundra section. Hopefully this is the final site plan and the exhibit will have a significant amount of soft substrate.
Good year for the Somali wild ass at St Louis ! : Record 5 Somali wild asses born at St. Louis Zoo | KMOV.com St. Louis
And another article about the Somali wild ass succes this year : Five Wild Ass Foals Boost Endangered Species - ZooBorns
Another article about the Tawny Frogmouth ( with video ) : Watch a Tawny Frogmouth Grow at St. Louis Zoo - ZooBorns