The effect of group size on time budgets and social behaviour in wild long-tailed macaques (Macaca fascicularis)

  title={The effect of group size on time budgets and social behaviour in wild long-tailed macaques (Macaca fascicularis)},
  author={Carel P. van Schaik and Maria A. van Noordwijk and Rob J. De Boer and Isolde den Tonkelaar},
  journal={Behavioral Ecology and Sociobiology},
SummaryA comparison of data on ranging, activity budgets and frequencies of social behaviour gathered over a range of group sizes for an omnivorous, forest-living monkey, the long-tailed macaque (Macaca fascicularis), showed that the length of the day journey, the time spent travelling and searching for dispersed food items, as well as social tension, show a monotonic increase with group size. A behavioural mechanism behind these patterns is the “puhing forward” effect: foraging animals tend to… 
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