Chimanuka, the old man of Kahuzi

The silverback is the male who leads the gorilla troop. This is Chimanuka, the silverback of the largest group of eastern lowland gorillas (Gorilla beringei graueri) in Kahuzi-Biega National Park and the park's oldest male. He's a very cool character, hardly even acknowledging us even though we were admiring him from just a few yards away. Photo © Josh Engel / The Field Museum.