Comparison of confined mandrill (Mandrillus sphinx) behavior in traditional and “ecologically representative” exhibits

Abstract 10.1002/(SICI)1098-2361(1999)18:33.3.CO;2-K Behavior in a confined group of mandrills (Mandrillus sphinx) was compared before and after their move from a traditional, all indoor exhibit to an indoor/outdoor facility. The outdoor exhibit was designed to represent as well as is possible important features of the mandrills’ forest habitat. We predicted that activity budgets in the outdoor […]

Uprooted trees facilitate the psychological well-being of captive chimpanzees

Abstract 10.1002/zoo.1430080110.abs After the introduction of uprooted trees to their environment, the behavior of 28 socially housed, laboratory chimpanzees (Pan troglodytes) was studied for five months. Subjects used the tree during 41.9% of the data points collected during the first day trees were introduced. Thereafter, the mean for tree use dropped to 3.5% and remained […]