Mothers again

From BBC news:
"Chimpanzees in Senegal have been observed making and using wooden spears to hunt other primates, according to a study in the journal Current Biology.
.......
Adult males have long been regarded as the hunters in chimp groups.

But the authors of the paper in Current Biology said females, particularly adolescent females, and young chimps in general were seen exhibiting this behaviour more frequently than adult males.

"It's classic in primates that when there is a new innovation, particularly in terms of tool use, the younger generations pick it up very quickly. The last ones to pick up are adults, mainly the males", said Dr Pruetz, who led the National Geographic-funded project.

This is because young chimps pick the skill up from their mothers, with whom they spend a lot of their time."