text: In 2016, it was estimated that the population has declined by more than 70% in Indochina and Malaysia during the last three generations (generation length estimated at 8–10 years), and is extirpated from Sri Lanka.  Populations in well-protected areas appeared to be stable.
  Ecology and behaviour
  Where gaur have not been disturbed, they are basically diurnal. In other areas, they have become largely nocturnal due to human impact on the forest. In central India, they are most active at night, and are rarely seen in the open after 8 o'clock in the morning. During the dry season, herds congregate and remain in small areas, dispersing into the hills with the arrival of the monsoon. While gaur depend on water for drinking, they do not seem to bathe or wallow.
  In January and February, gaur live in small herds of eight to 11 individuals, one of which is a bull. In April or May, more bulls may join the herd for mating, and individual bulls may move from herd to herd, each mating with many cows. In May or June, they leave the herd and may form herds of bulls only or live alone. Herds wander  each day. Each herd has a nonexclusive home range, and sometimes herds may join in groups of 50 or more.