Maroon leaf monkey

The maroon leaf monkey, also called the maroon langur or red leaf monkey, Presbytis rubicunda, is found on the Southeast Asian island of Borneo and the nearby smaller Karimata. It lives mostly in forests at altitudes below 2,000 m, in dense dipterocarp evergreen forest, and spends most of its time in the canopy. It is a selective feeder on young leaves, seeds, fruit and flowers, taking young leaves for most of the year, seeds and whole fruits when they peak between June and September, and flowers between March and May. In April, June and August it eats topsoil from termite mounds to obtain minerals. It has large home ranges and low densities, probably because it depends on rare, widely scattered trees. In one observation study it spent 46 percent of its feeding time on young leaves and 38 percent on seeds.