Answer : 1. "Tamil Nadu"
Explanation :

The International Union for Conservation of Nature (IUCN) will join the three-day synchronized Nilgiri tahr census as a third-party observer. The census, which began on April 29, is the first coordinated effort to estimate the population of the Nilgiri tahr. Partners include WWF-India, WII and AIWC. Project Nilgiri Tahr, initiated by the Government of Tamil Nadu and spanning 2022-2027, aims to protect the species and ensure its survival.