The Nilgiri langurs we came across were very private. There was a large tribe of them foraging on trees by the road near Valparai. As soon as our car stopped, the nearest ones fled further into the forest. I got off and tried to photograph the ones in the next tree, and they fled as well. This happened over and over again. I got a couple of shots of one by hiding behind a thick bush and sighting through a narrow opening between its thorny branches. The only clear shot was of one sleeping on a high branch of a tree very far away (below).
These monkeys have a glossy dark body with a light golden brown head, and would look lovely in photos. The morning light was just right, but the subjects were shy. This was so frustrating and strange! The lion-tailed macaques we saw would walk right next to us without even looking at us. So it could not only be the indirect conflict of lost habitats which was influencing the behaviour of the langurs. I just had to google this.
The answer was simple: exactly as I’d thought, they were traditionally hunted, as they continue to be. Traditional medicine uses their body parts as medicines and aphrodisiac. Since the passage of laws protecting them the trade has gone underground and presumably trade volumes of so-called medicines have decreased.
An important reference seems to be the 2011 studbook, but arkive is a good place for a shorter description. I learnt from the studbook that the classification of langurs is still an open question. There may be as few as 5000 individuals, and even the higher estimates still give a total population of no more than 15000. It is a pity that this beautiful monkey is so hard to see.