bed or cushion Make bed or cushion on ground for daytime rest, by bending over few shrubs or grasses. Mahale chimpanzees make no ground beds for overnight use, but those of Nimba sometimes spend night on ground bed probably because of lack of predators, or as mate-guarding. Also, ground beds seem to be used for overnight sleeping at Kalinzu, with few large carnivores. See video. 119 M 120 marrow-pick make leaf cushion Hirata et al.s Leaf cushion: Use leaves as cushions to sit on wet ground. Whiten et al.s Seat vegetation. Different from simple cushion in that materials for leaf cushion is cut off from plant. Habitual at Ta, present at Bossou, Goualougo and Kibale. Absent at Mahale. See Fig. 2. Fig. 2 Make leaf cushion: Leaves left