Contributions to Zoology, 80 (4) – 2011Sam Shanee; Noga Shanee: Activity budget and behavioural patterns of free-ranging yellow-tailed woolly monkeys Oreonax flavicauda (Mammalia: Primates), at La Esperanza, northeastern Peru

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Social and other behaviours

No significant differences were found in activity budgets for Social and Other Behaviours between age/sex classes or between months. Although juveniles were seen to engage in Play more than other age/sex classes this fell short of statistical significance (χ² = 6.65, df = 3, p = 0.08). Adult males and adult females with infants were observed vocalizing more often than the other age/sex classes. Adult males displayed more aggressive behaviours. Sexual behaviours were very rarely observed; we only recorded this behaviour on two occasions, both in January.