11. As well as chimpanzees and gorillas other primates include black colobus monkeys and mandrills. 12. Females have even been observed to kill immigrant males in wild red colobus monkeys . 13. She discovered that chimps will systematically hunt and eat smaller primates such as colobus monkeys . 14. Another remarkable behavior occurs when red colobus monkeys reach their restless and somewhat nomadic adolescence. 15. For example, red colobus monkeys exhibit mobbing when threatened by chimpanzees, a common predator. 16. Another characteristic of the chimpanzee that Goodall discovered was their cooperative hunting of red colobus monkeys . 17. Birth rates for those living in mangroves are higher than colobus monkeys living in coral rag forests. 18. The black colobus monkey is now only found in areas which cannot be easily accessed by humans. 19. Red colobus monkeys in Africa have been observed eating charcoal for the purposes of self-medication. 20. The endangered black and white colobus monkey and a variety of antelopes and birds are also present.
