WILD LIFE: In chimpanzees, females contribute to the protection of the territory. Researchers have extensively studied several neighboring groups of western chimpanzees and their findings reveal that females and even the entire group may play a more important role in between-group competition than previously thought.
They found that even though adult males seem important in territory increase, territory maintenance and competitive advantage over neighbors act through the entire group in this population of chimpanzees in the Taï National Park.
In chimpanzees, females contribute to the protection of the territory: Female chimpanzees are also important in helping to win and keep a territory -- ScienceDaily
In humans, warfare and territoriality have traditionally been considered male "business." Chimpanzees, with whom we share this propensity for out-group hostility and territoriality, are
thought to follow the same gender
difference.