@Onychorhynchus coronatus Unfortunately, there's far worse in the United States. Many zoos, including AZA ones, commonly use corncribs to house primates, birds, and small cats.
@MonkeyBat That is an awful enclosure, it would be excusable in a Latin American country where resources are hard to come by. Forgive me being brusque but it is absolutely inexcusable in a zoo in the USA