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Science 28 January 1966:
Vol. 151. no. 3709, pp. 476 - 478
DOI: 10.1126/science.151.3709.476
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Articles

Free-Ranging Rhesus Monkeys: Age and Sex Differences in Individual Activity Patterns

William A. Draper 1

1 Yerkes Regional Primate Research Center of Emory University, Atlanta, Georgia

Two hundred thirty of the feral rhesus monkeys on Cayo Santiago were observed individually for postural adjustments, locomotor behavior, manipulation, and other nonsocial activities. Both form and frequency of activity were influenced strongly by age; sex differences were minimal. Most activities decreased with age, but head movements, presumably reflecting visual scanning, were more frequent in adults.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)