article_snippet.sent: This female chimp has stripped a stick of leaves and uses a stick of leaves to flush out a bush baby from a hollow tree trunk .
article_snippet.sent: This study is thought that the behaviour is passed from one generation to the next and is learned by young chimpanzees.
article_snippet.sent: Dr Pruetz added: 'What would often happen is the male would be in the vicinity of another chimp hunting with a tool, often a female, and the bush baby was able to escape the female and the male grabbed the bush baby as the bush baby fled.'
article_snippet.sent: Dr Pruetz added: 'It's just another example of diversity in chimp behavior that we keep finding the longer we study wild chimps.'
article_snippet.sent: When hunting, a bush baby tries to bite, escape or hide from chimp.
article_snippet.sent: The chimps are really averse to being bitten by a bush baby.'