@DavidBrown As far as I know this fairly new exhibit (it opened in 2011) only houses penguins but maybe there is a local visitor that can give us updated information. I've always considered the enclosure to be a decent one...but why the aviary-type structure? I don't recall any other birds in the exhibit and it seems a strange choice of design.
@snowleopard I tried to do research to see if anything else was in the exhibit but every link just says it's African Penguins. Toledo's and Louisville's recent penguin exhibits are the same way.