Key Highlights
- Covering 485 km² across Virudhunagar and Madurai districts, the sanctuary safeguards the rare grizzled giant squirrel.
- It comprises evergreen, dry‑deciduous, grassland and cultivated ecosystems, together with a dedicated Medicinal Plant Conservation Area.
- More than 275 bird species, 220 butterfly species, and a suite of mammals such as tigers, elephants, Nilgiri tahrs, and lion‑tailed macaques inhabit the area.
- Management actions include barring cattle, prohibiting external fruit collection, extensive tree‑planting, construction of water‑storage structures, and radio‑collar monitoring of elephant movements.
- Persistent threats involve forest fires, water scarcity, and conflicts between humans and wildlife.
Detailed Insights
Located in the western fringe of Tamil Nadu, the Grizzled Squirrel Wildlife Sanctuary straddles the Virudhunagar and Madurai districts and lies adjacent to the Western Ghats. Its terrain is rugged, featuring high hills, deep valleys, perennial rivers, and dense forests, with Kottamala rising to 2,019 m as the highest summit. The vegetation mosaic ranges from evergreen and dry‑deciduous forests to open grasslands and cultivated patches, supporting a rich assemblage of flora. A specially demarcated Medicinal Plant Conservation Area nurtures numerous herbs; tribal communities traditionally employ 69 distinct plant species for health remedies.
The fauna is equally diverse. Apart from the eponymous grizzled giant squirrel, the sanctuary shelters apex predators like tigers and leopards, megaherbivores such as elephants, and several endemic primates including lion‑tailed macaques and Nilgiri langurs. Avian diversity exceeds 275 species, featuring rarities like the Oriental white‑backed vulture and Nilgiri wood‑pigeon. Reptiles, amphibians, and over 220 butterfly species further enrich the ecosystem. Conservation initiatives focus on habitat protection, anti‑poaching measures, and scientific monitoring, yet challenges like fire outbreaks, inadequate water storage, and human‑wildlife clashes persist.
Key Concepts
- Endemic Species: Organisms that occur naturally in a restricted geographic area and nowhere else.
- Medicinal Plant Conservation Area: A protected zone dedicated to preserving and studying plants with therapeutic properties.
- Radio‑Collar Tracking: A wildlife monitoring technique that attaches a radio transmitter to an animal to record its movements.
- Human‑Wildlife Conflict: Situations where the needs or safety of human populations intersect adversely with wildlife.
- Western Ghats: A UNESCO World Heritage mountain range along India’s western coast, recognized for its exceptional biodiversity.