When I was in Singapore zoo last year I noticed they had a lot of animals moving around not in enclosures. Mainly marmosets, tamarins, leaf monkeys and lemurs. I have also seen a T.V show about Auckland zoo. They had cotton top tamarins that where free range. Is it true that Adelaide tried this aswell? Does anyone know of other zoos that does this? I know most zoos have birds free range (peafowl, guineafowl etc) Does any one know of any other free range animals?