Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. Wild, young adolescent male chimpanzee sits looking up into the trees.

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. Wild chimpanzee yawns while resting with others.

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. Two adult male chimpanzees observe their surroundings with interest..

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. With strong shoulders, long arms and opposable toes, a wild chimpanzee climbs with ease.

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. A male chimpanzee looks up into the trees.

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. Wild male chimpanzee rests while remaining aware of his surroundings.

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. Wild chimpanzee rests with his feet up, showing off his opposable toes.

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. A male chimpanzee pauses from eating fruit to listen, the unique whites of his eyes highlight his gaze.

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. Wild female chimpanzees, with an infant, pant-hoot in response to the distant calls of other chimps.

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. A male chimpanzee looks up into the canopy.

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. Curious, young adult chimpanzee, 'Wes'.

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. Hearing the calls of a nearby group of chimpanzees, a female and her companions respond with their own pant-hoot vocalizations.

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. A male chimpanzee listens and surveys his surroundings from behind thick vegetation.

Africa, Uganda, Kibale National Park, Ngogo Chimpanzee Project. A male chimpanzee sits with his long arms reaching his toes as he looks up into the trees.