Intra- and inter-group interactions of an all-male group of virunga mountain gorillas (Gorilla gorilla beringei)

  title={Intra- and inter-group interactions of an all-male group of virunga mountain gorillas (Gorilla gorilla beringei)},
  author={Juichi Yamagiwa},
Six unrelated male gorillas formed an all-male group within the Virunga mountain gorilla population. Frequent homosexual interactions characterized the high cohesiveness of this group. Such homosexual behavior reduced the inter-individual distances and increased the social tension between the two silverbacks in the group. The silverbacks retained “ownership” of the homosexual partners, but competed and fought with each other violently when the partners avoided or ignored their courtship… 

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