the ugandan red colobus is a folivore so the main component of its diet is leaves. it is not limited to any tree species in particular and different groups in the same forest have shown preferences for different tree species. although not particularly fussy about which species of tree it eats, the ugandan red colobus does have a preference for eating young leaves or the petioles of more mature leaves. although uncommon the ugandan red colobus has been observed eating bark, seeds and fruits, thought to be an important source of nutrients.