Long, L. A., Gibson, S., Williams, L. et al. 2007. Owl monkeys (Aotus sp.) utilize food directed and non-food directed enrichme
Nest boxes are the only documented effective enrichment devices for laboratory housed owl monkeys (Aotus spp.). Food directed (FD) and non-food directed (NFD) enrichment items were presented to owl monkeys housed as singles, pairs, or...