You know, looking back, I know there were some monkeys on those miscellaneous islands, but I can't remember now and their website doesn't clarify. There were also ring-tail lemurs.
Primate amnesia - I get that! Particularly if there's a collection of fairly common species in similar enclosures. Doesn't affect any other mammal groups. Carnivores, ungulates, rodents - fine. Primates I always find the hardest to remember.
When I went, there was an island like this that had colobus but the island had more trees on it and climbing material.
Sorry for my original post, it looked like a zoo I saw on Crocodile hunter diaries but just realised this is a north american zoo we are on about