to expel or to skewer prey from tree hole or rocky cavity at Mahale and Fongoli. Prey species are squirrel, hyrax, and bushbaby. See also expel. See video. hurl self Throw oneself at another individual. Play pattern employed in tree. 8. See video. huu Goodall:.very like the hoo whimper, but is usually higher pitched and the huu does not show the pouted lips characteristic of hoo. It is made when a chimpanzee suddenly hears or sees a strange object or sound. Sound often helps researcher to find otherwise silent, hidden chimpanzee in bush. Absent in bonobos? 5. I ignore Adult female does not respond to harassment by immature male, so avoids escalation of harassment. Mother does not approach weanling despite its request to suckle, ride, etc. Adult male