Why do chimps throw stones at trees?
One group of chimps repeatedly throws stones at specifc trees, in what may be a cultural behaviour
Chimps in the West African country of Guinea have been observed hurling rocks at trees. Although the researchers are still mystified as to the exact purpose of this behaviour, they believe it may be a form of communication. The sound of a rock hitting a hollow tree may be a signal of their location to other chimps, or possibly a claim on a territory.
The chimps repeat this activity, using the same stones and the same trees. It is believed to be a cultural behaviour specific to this group of chimps.