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Understanding the Social Structure and Ecological Basis for the Formation of Supergroups in Ruwenzori Colobus Monkeys

  More than 90 individuals can be seen eating on the ground in this photo.
Photo by Alexandra Miller

Alexandra Miller, Spring 2016

Alexandra Miller studies the social organization of Adolf Friedrichs’s Angolan colobus monkeys (Colobus angolensis ruwenzorii). She recently reported counting 512 individuals crossing a main road. These monkeys eat fruits, lichens, mature and new leaves, and flowers. They come to the ground to feed on terrestrial herbaceous vegetation such as Sericostachys sp. and Impatiens sp. While on the ground, they appear to stay in their family group and are often on the alert for chimpanzees, which are known to kill and eat them. In the photo at the top of the page, they look as if they are waiting for a family photo to be taken.

  Alexandra, happy to be so close to the colobus.

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