Grey langurs are largely grey (with a touch of yellow) with a black face and ears. The typical male is about 2 -1/2 feet in length, with a longer tail. A big langur can weigh over 20 kg.The langurs walk on all fours though they sit with the body held upright. Equal amount of time is spent on the trees and the ground.The grey langur is diurnal and sleeps at night in the high branches of trees.Langurs are preyed upon by leopards, wolves, pythons etc. The animal is primarily a herbivore and feeds on leaves, seeds, pods (of Maljhan creeper in Morni), wild figs (beda nuts, gular figs, chimbal figs etc in Morni), herbs, roots, grasses, mosses, etc It also feeds at termite mounds, on spider-webs etc. The langur moves in groups with the stronger males siring most of the young.Younger females rank higher in the group and are more reproductively successful.In uni-male groups when the existing male is displaced by a newer stronger one, the latter often kills the infants sired by the former.The Grey langur has a wide array of barks and also grunts, rumbles and screams.
Langurs are generally considered sacred and rarely hunted. The damage to habitats poses a threat with langurs damaging crops to meet their food needs.
A study by the Department of Zoology, Kurukshetra University in the period June 2009- June 2011 estimates the number of langurs at 432 with a male:female ratio of 1:3.2. 24 ‘troops’ were identified with size ranging from 14- 30 and 66.66% of these were bisexual, the rest being all male. The langurs were found to be shy, feeding on natural foods and keeping their distance from human settlements.
- Group size and composition, sex ratio and birth seasons in Hanuman langurs in Morni Hills of Haryana India; Girish Chopra, Madhu Bala Bhoombak and Parmesh Kumar; J. Exp. Zool. India Volume 15 (No.1, 2012)