De Vore, I. , Hall, K. R. L. 1965. Baboon ecology. In: Primate Behavior - Field Studies of Monkeys and Apes. De Vore, I. (ed), 20-52. Holt, Rinehart and Winston, New York, NY.

Photograph documenting a group of baboons who has taken refuge from a lioness by climbing into the trees. These trees are smaller than those used for sleeping. ... The danger of predators sets limits on baboon day ranges and home range. Refuge sites - tress, cliffs, 'koope' - limit baboon range as much as available food and water. A group's day range is limited by the necessity of returning to a safe sleeping site at night. ... The absence of trees in some areas may deny baboons access to rich food sources when food items in general are scarce.