They are omnivores, eating buds, leaves, berries, seeds, and insects.
Lactating does are particularly hungry and eat buds for their high nutritional value.
In addition to these, they will eat sprouts, buds, and other fresh growth found at ground level.
Urocolius indicus in particular eats a great deal of fruit, leaves, buds, flowers, nectar and similar material.
In the dry season, it eats mature leaves and buds.
They also will eat roots, seeds, fruit, and buds.
They mainly eat seeds, buds and berries, some insects.
Lutungs are herbivores, primarily eating leaves, fruits and buds.
In agricultural areas the bird may do some damage to crops, mostly by eating buds and shoots.
The caterpillars eat especially the flowers, buds and fruit.