For proper management of a wildlife reserve, it is essential to get estimates of occurrence, abundance, density and biomass of herbivores that in turn determine the density of carnivores. The Biligiri Rangaswamy Temple Wildlife Sanctuary (BRT WLS) is a critical conservation region as it is a living bridge between the Eastern and the Western Ghats of southern India.

In the present study, we surveyed the primate species in the Highwavy Mountains of Tamil Nadu, India. Five primate species, including Nilgiri langur, Hanuman langur, bonnet macaque, lion-tailed macaque and