Chimps 'talk' about favourite fruits, best trees

Researchers eavesdropping on wild chimpanzees have determined that the primates communicate about at least (!) two things: their favourite fruits and the trees where these fruits can be found.  Of particular interest to the chimps is the size of the trees bearing these fruits - the chimps yell out that information, according to a new study.  The study is the first to find that information about tree size and available fruit amounts are included in chimp calls, in addition to assessments about food quality.