to immature chimpanzees; that is to say, "the adult bonobos have a morphology that resembles the juvenile morphology of common chimpanzees, and that adult chimpanzees have a morphology that corresponds to that of a juvenile gorilla. The adults of each species, in this view, represent different points on the same growth curve" (2). See figure 7.13 for an illustration.
In terms of the animal's range, food appears to be the main determinant in overall group movement. Some researchers such as Fossey have maintained that gorillas go our of their way to avoid contact with another group. In addition, the fact that the gorilla does not seem to be able to swim is another factor influencing is range. The gorilla's reluctance to wade even across shallow streams may partially explain the unusual distribution of the species (3).
A. G. Goodall determined that movements in the course of a year were not random, but followed an established migratory pattern with respect to availability of food. According to Shaller, the gorilla is diurnal, with nearly all activi
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