Taxonomy -- Taxonomy and Biogeography of the Primates of Western Uganda -- Ecology -- Factors Influencing Variation in the Population Densities of Colobus guereza, Within Selectively Logged Forest at the Budongo Forest Reserve -- How Does the Golden Monkey of the Virungas Cope in a Fruit-Scarce Environment? -- The Diet of Olive Baboons (Papio anubis) in the Budongo Forest Reserve, Uganda -- Aspects of Diet, Foraging, and Seed Predation in Ugandan Forest Baboons -- The Interaction of Hormones with Ecological Factors in Male Budongo Forest Chimpanzees -- The Role of Diet in Self-Medication Among Chimpanzees in the Sonso and Kanyawara Communities, Uganda -- Geophagy in Chimpanzees (Pan troglodytes schweinfurthii) of the Budongo Forest Reserve, Uganda -- Nutritional Aspects of the Diet of Wild Gorillas -- The Parasites of the Gorillas in Bwindi Impenetrable National Park, Uganda -- Preliminary GIS Analysis of Range Use by Sympatric Mountain Gorillas and Chimpanzees in Bwindi Impenetrable National Park, Uganda -- Behavior and Physiology -- Comparison of Sex Differences in Gregariousness in Fission-Fusion Species -- Urinary Estrone Conjugates and Reproductive Parameters in Kibale (Kanyawara) and Budongo (Sonso) Chimpanzees -- Frequent Copulations by Females and High Promiscuity in Chimpanzees in the Kalinzu Forest, Uganda -- Effects of Injury on the Locomotion of Free-Living Chimpanzees in the Budongo Forest Reserve, Uganda -- Effect of Snare Injuries on the Fig-Feeding Behavior of Chimpanzees of the Budongo Forest, Uganda -- Deciphering Junglespeak -- Instrumental Leaf Use by Chimpanzees of the Budongo Forest (Sonso Community) -- Conservation -- A Survey of Prosimians in the National Parks and Forest Reserves of Uganda -- The Diets, Preferences, and Overlap of the Primate Community in the Budongo Forest Reserve, Uganda -- Behavioral Patterns of Colobus in Logged and Unlogged Forests -- Threats to, and Protection of, the Chimpanzees of the Budongo Forest Reserve -- Gorillas Living on the Edge -- Local Ecological Perceptions of Chimpanzees and Forest Resources. Written by an international array of primatologists, this volume provides a series of scientific accounts with topics that range from taxonomy and biogeography to ecology, behavior and physiology, and ultimately, to conservation. The species studied range from nocturnal strepsirrhines to chimpanzees and mountain gorillas. Every study is new, published here for the first time. Together they provide a collection of fresh discoveries and insights, and this book reflects both current patterns of reseach and the diversity of the primates of western Uganda.