These lemur and monkey cages should really have been torn down a few decades ago, and it is puzzling why such a good zoo (with many spectacular exhibits) still has a number of downright horrible cages for primates. Omaha has always been a contrast between massive, overwhelming habitats, and outdated, decrepit cages.
The thing is most of the primate species in these cages (I think there are 4 like this) is that they're represented in better exhibits in Lied Jungle or elsewhere.
Evidence that the zoo's new director is less of a "collector" than his predecessor (who did great things, but who clearly always felt that "more is more").