Chitteri Hills (654.52 km²) are one of the segments of Eastern Ghats of Tamil Nadu, within the geographical limit of 78°15’−78°45’E longitude and 11°44’−12°08’N latitude. The hill harbour various vegetation types such as the evergreen, the semi-evergreen, the riparian, the dry mixed deciduous, the dry deciduous scrub and the southern thorn scrub forests (Champion and Seth, 1968). The minimum and maximum temperature of the area is 19 °C (in winter) and 40 °C (in summer) respectively. The annual rainfall varies from 620 to 900 mm and it received both northeast and southwest monsoons. The hills form a compact block consisting of several hill ranges, and contain tangled ridges and ravines running in the northeast and southwest directions, enclosing many narrow valleys (rivers), viz. Kallar, Va