kick back Goodall: Walking individual kicks backwards towards a following youngster Seen in bonobos. See video. kick backward quadrupedal Kick backward to buttress, tree trunk, wall, etc. while standing on four limbs. Goodalls Drum/Kick. See video. K kick bipedal Kick buttress or tree trunk with foot while standing bipedal. See also drum. Absent in bonobos? 5. See video. kick buttress Kick buttress or alternative such as tree trunk and metal wall. Done mainly by adult males. Demonstrate own geographic position. See also drum. 5. See video. kick heel Goodall Heel kicking: resting individual raises one leg and thumps its heel down on a youngster who is playing around him or her. Also at Mahale. Goodalls other type is An older male, when lying on back holding an infant