Kin play limited role in chimp cooperation

By Bruce Bower, 15:56 PM April 15, 2008

Male chimps collaborate in a variety of ways and, like people, often find partners outside of their immediate families for cooperative ventures, according to a long-term study of these creatures in the wild.

Kevin E. Langergraber of the University of Michigan in Ann Arbor and his colleagues spent a total of 20 months between 1999 and 2005 observing cooperative acts between pairs of adolescent and adult male chimps living in a large community in Uganda's Kibale National Park. Observed collabor...

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