The bulk of the chimps’ diet consists of fresh fruits and vegetables, nuts, seeds, and browse (more fibrous plant material such as grape vines or cattails), but we still supplement their diet with a very small amount of commercially prepared primate chow. The end of the bag is usually filled with crumbs and chow dust, which the chimps view as a special treat.
Jamie got most of it during a forage the other day:
But Foxie came along to help her clean up what was left: