Grizzled Squirrel Wildlife Sanctuary, Nature reserve near Sivagiri, India.

The Grizzled Squirrel Wildlife Sanctuary is a nature reserve near Sivagiri with terrain ranging from lowland plains to mountain peaks at over 2,000 meters. The protected area features diverse habitats connected by walking paths that visitors can explore.

The sanctuary was established in 1988 to protect the Near threatened grizzled giant squirrel (Ratufa macroura). Tamil sources date its creation to 1989. On 8 February 2021 it was merged into the new Srivilliputhur Megamalai Tiger Reserve, following an increase in tiger sightings.

The Paliyan people have long gathered plants here for traditional medicine, keeping their knowledge of local healing practices alive. Visitors walking through the sanctuary can see how communities and nature have existed together for generations.

Entry permits from the Tamil Nadu Forest Department are required before visiting the sanctuary. Since the area is accessible only by walking paths with no internal roads, plan for outdoor hiking as your main way to explore.

The 2013 bird survey recorded species found only at high altitudes of the Western Ghats, among them the Sri Lankan frogmouth, mountain and rufous-bellied hawk-eagles, and the great Indian and Malabar pied hornbills. A medicinal plant conservation area at Thaniparai is also maintained inside the sanctuary.