Primatologists have long viewed small fruiting trees, like figs, as the reason for gibbons’ territorial and monogamous behavior.  However, at Khao Yai National Park in Thailand where gibbons are prevalent, figs are one of the largest trees in the forest.  In this long-term field study, Bartlett takes up this apparent contradiction, and follows gibbons as their major food sources wax and wane over time.This is an important reference on gibbons and the study of small apes which provides a thorough, expansive coverage of the relationship between fruit abundance and diet, range use, and intergroup interactions in Gibbon apes. The Gibbons of Khao Yai: Seasonal Variation in Behavior and Ecology provides an essential resource for students conducting research in this field.

chapter 1|19 pages

History of Gibbon Field Studies

Monogamy, Frugivory, and Territoriality

chapter 2|19 pages

Study Animals, Study Site, and Methods

chapter 3|23 pages

Activity Budgets and Social Behavior

chapter 4|25 pages

Diet and Feeding Behavior

chapter 5|16 pages

Ranging Behavior

chapter 6|17 pages

Territoriality and Intergroup Encounters

chapter 7|28 pages

Gibbon Socioecology