Ross, S. R., Shender, M. A. 2016. Daily travel distances of zoo-housed chimpanzees and gorillas: Implications for welfare assessments and space requirements. Primates 57(3), 395-401.
The degree to which the relatively smaller area of artificial environments (compared with natural habitats) has measureable effects on the behavior and welfare of captive animals has been debated for many years. While there is...