Resting or lying groomee lowers raised leg, apparently stimulating groomer to groom another body-part. Seen in bonobos. See video. lower rump Mother lowers rump in order to drop infant. Sometimes, almost stands bipedally but with one hand on ground. See drop infant. 7. See video. L Lui Kotale Study area of Pan paniscus in Salonga National Park, DRC. Research organized by G. Hohmann and B. Fruth from 2000 to present. Lukuru Study area of Pan paniscus in Lukuru Forest, DRC. Research organized by J. Thompson from 1992 to present. lunge See leap on. Luo Scientific Reserve See Wamba. M Mahale Research area of Pan troglodytes schweinfurthii, used as synonym of Kasoje area, and abbreviation of Mahale Mountains and Mahale Mountains National Park. Research organized by T. Nishida from