is one of the rare species in the world, but most commonly found in Bhutan and throughout the Himalayas. They are found on the western side of the Manas river, situated in the southern foothills of Bhutan.
They live in troops of as many as 50, feeding mostly on the mature leaves.They seldom leave the trees and depend on the dew or rain drenched leaves to quench their thirst. Similarly the capped langurs are found on the eastern side of the Manas river.