All-India Tiger Estimation 2026 Begins in Thanthai Periyar Sanctuary

The first phase of the All-India Tiger Estimation 2026 (AITE-26) commenced on January 6 in the Thanthai Periyar Wildlife Sanctuary under the Erode Forest Division. The large-scale wildlife census marks a key step in India’s periodic national effort to assess tiger populations and associated biodiversity using standardised scientific methods.

Training and Field Deployment

Ahead of the enumeration, forest department staff underwent structured training in wildlife census techniques. Following this, field operations were launched across four forest ranges—Anthiyur, Bargur, Chennampatti, and Thattakarai. More than 150 personnel have been deployed and organised into multiple teams to cover 52 forest patrol beats across the division, ensuring systematic spatial coverage.

Line Transect Method and Species Coverage

During the first three days, the census is being conducted using the line transect method. Under this approach, teams record pugmarks, animal droppings, and direct sightings along predefined paths. While the primary focus remains on tigers, the survey also documents co-predators and large mammals such as leopards, gaur, elephants, and bears. Forest divisions that support carnivores outside designated tiger reserves are also included to generate broader ecological data.

Herbivores, Birds and Vegetation Assessment

In the subsequent three days, the focus shifts to large herbivores including elephants, gaur, and deer. The exercise also covers scavenging birds such as vultures, along with detailed documentation of tree species, grasses, shrubs, weeds, and forest undergrowth. This integrated approach enables assessment of prey base, habitat quality, and overall ecosystem health, which are critical for long-term tiger conservation.

Imporatnt Facts for Exams

• All-India Tiger Estimation is conducted once every four years.
• The line transect method is widely used for wildlife population sampling.
• Tiger estimation includes assessment of prey base and habitat quality.
• The National Tiger Conservation Authority oversees tiger conservation in India.

Data Compilation and National Reporting

The field-level survey in the Erode Forest Division is scheduled to conclude on January 12. All collected data on wildlife, herbivores, scavenging birds, and vegetation will be compiled and submitted to the National Tiger Conservation Authority by January 31. The consolidated national findings of AITE-26 are expected to be released in 2027, providing critical inputs for policy, habitat management, and conservation planning across India.