Abstract
The main objective was to collect baseline data on the differences in activity budgets between groups housed in vegetated and non-vegetated conditions. Comparison of activity budgets of 34 captive monkeys (3264 focal sessions) living in 3 different enclosures was conducted for a 12-month period at the Primate Research Institute. Resting and moving time was significantly longer in the 2 non-vegetated than the 1 vegetated enclosure. Feeding and grooming time was significantly longer in the vegetated enclosures. In the vegetated enclosure, seasonal variation of resting and moving time differed significantly, while in the non-vegetated enclosures all activities varied significantly. Seasonal temperature significantly affected time spent feeding and resting. In both enclosure types, immatures of both sexes, particularly immature females, spent longer time feeding and moving, whereas adults spent longer time resting. Time spent for all activities was significantly differed by age classes but not by sex classes.
