Pic caption: Pandora, an adult gorilla which Professor Byrne studied at Karisoke, Rwanda. Her right hand is cut off across the palm - only the lowest segment of the thumb retains any movement and her left hand has two of the fingers paralysed.
Pic caption - Diana monkey in the Tai Forest, Ivory Coast.
CAPTION: Researcher Sarah Marshall teaches a young chimp how to crack nuts with a hammer stone at the Ngamba Island Chimpanzee Sanctuary, Uganda.
Chimpanzees display some of the same cultural diversity as people, according to two of the world's leading primate experts.
Everything from addiction to chimpanzee behaviour will come under the microscope at the University of St Andrews this month (Saturday 17 March 2001).
A study of one of the world's most common flies could improve the understanding of mating behaviour throughout the animal world.
A primate expert has developed an innovative technique which is providing the first clear evidence that children and chimpanzees learn the traditions of the community they live in by similar processes of imitation.