Enlarging chimpanzee social groups: The behavioral course of introductions (1998)

Bloomsmith, M. A., Baker, K. C., Ross, S. K. et al.

Abstract

All 42 introductions of chimpanzees (aged 3-43 years) in already established groups were successful. New group members were first introduced behind mesh fencing. Subsequent full physical contact did not further increase agonism. Stereotyped rocking declined in newly integrated individuals.