Overview

• The joint survey conducted in April across 89 blocks in Kerala and 182 blocks in Tamil Nadu documented a combined population of 2,668 nilgiri tahrs, with 1,365 in Kerala and 1,303 in Tamil Nadu.
• Eravikulam National Park continues to be Kerala’s stronghold, hosting 841 tahrs and reporting 144 new births after rotational controlled burns improved grassland quality.
• Tamil Nadu’s synchronised census employed bounded count and double observer methods, raising recorded encounters from 1,031 in 2024 to 1,303 in 2025 by enhancing data reliability.
• Ninety percent of Kerala’s tahrs remain concentrated in the Munnar landscape, highlighting the value of large, contiguous habitats for species recovery.
• Tamil Nadu released its first detailed threat assessment to guide efforts against habitat fragmentation, invasive species proliferation and infrastructure impacts.