The monkeys' preferred lichen species seem to grow on Cerasus discadenia, Salix wallichiana, and Malus halliana. Lichens are found in great profusion on dead trees.[6] Monkeys at Qingmuchuan Nature Reserve have not been observed feeding on lichen; during the winter they feed mostly on leaves, bark, and buds, and during the summer they feed mostly on the fruit of the giant dogwood.[19]