Buxa Tiger Reintroduction: Tigress T138 and Habitat Recovery in the Dooars

Context

On 2 October 2026, forest authorities initiated the Buxa Tiger Reintroduction Programme. The operation released a three-year-old Bengal tigress (T138), translocated from Bihar's Valmiki Tiger Reserve, into an acclimatisation enclosure in West Bengal's Buxa Tiger Reserve.

As of October 2026, this inter-state translocation marks the culmination of an intensive eight-year habitat restoration and prey-augmentation initiative. The joint project is executed by the West Bengal Forest Department, the National Tiger Conservation Authority (NTCA), and the Wildlife Institute of India (WII). Its goal is to re-establish a self-sustaining breeding tiger population across the sub-Himalayan Dooars landscape.

The relocation highlights a core ecological reality. Reviving apex predators in depleted habitats requires fixing basic ecological bottlenecks, particularly ungulate prey density and habitat fragmentation, before bringing in founding animals.

According to a press release by the Press Information Bureau, the Union Environment Minister and the Chief Minister of West Bengal oversaw the release of a three-year-old Bengal tigress (T138) into Buxa Tiger Reserve on 2 October 2026. This operation formally operationalised the phased Buxa Tiger Reintroduction Programme.

Tigress T138 was translocated from Valmiki Tiger Reserve in Bihar, chosen by wildlife biologists for its matching ecological and bio-climatic conditions. As reported by The Indian Express on 2 October 2026, an Indian Air Force aircraft airlifted the tigress directly to Hasimara airbase.

Authorities then moved her by road to Buxa. Field teams fitted her with a satellite GPS radio-collar and released her into a 2.3-hectare soft-release enclosure for observation.

Valmiki Tiger Reserve in Bihar serves as a donor site because its Terai-foothill ecosystem mirrors the climatic and floral conditions of northern West Bengal. According to a PIB press release, choosing an ecologically matching donor population minimises post-release dispersal stress and improves adaptation rates.

Reports in The Economic Times on 2 October 2026 indicate that the Buxa recovery framework forms part of a phased multi-year initiative. The plan introduces a total of 6 to 7 tigers across 2026 to 2028–29, structured around two distinct breeding units.

The relocation process follows statutory mandates under the Wildlife (Protection) Act, 1972. This ensures that genetic compatibility and landscape connectivity remain central to national tiger recovery planning.

Buxa Tiger Reserve was established in 1983 as India's 15th tiger reserve, spanning an area of approximately 760 square kilometres in the Dooars region of West Bengal's Alipurduar district, according to the Press Information Bureau.

According to landscape reports from the National Tiger Conservation Authority, Buxa represents a strategic transboundary wildlife hub:

• Steep altitudinal gradient: Elevations rise from 200 feet up to nearly 5,740 feet along the Sinchula range, spanning moist sal forests to evergreen tracts.
• Transboundary connectivity: The reserve shares an international border with Bhutan's Phibsoo Wildlife Sanctuary to the north.
• Regional corridors: Buxa links directly with Manas Tiger Reserve in Assam to the east and Jaldapara National Park to the west.

This geography enables transboundary genetic exchange across northern South Asia.

The NTCA and WII 'Status of Tigers in India 2018' census confirmed zero resident tigers in Buxa Tiger Reserve, categorising it alongside Mizoram's Dampa and Jharkhand's Palamau as reserves suffering local tiger extirpation.

According to the Press Information Bureau, several historical factors drove this local extinction:

• Prey-base collapse: Severe depletion of wild ungulate populations deprived large carnivores of an adequate food source.
• Canopy closure: Dense tree canopies suppressed the growth of nutritious fodder grasses required by herbivores.
• Anthropogenic pressures: Heavy livestock grazing, linear infrastructure corridors, and encroachment from fringe tea estates fragmented core wilderness tracts.

Without an abundant wild prey base, resident breeding tigers could not sustain their energetic requirements, leading to gradual extirpation across the reserve.

Active preparation for tiger reintroduction began under the Tiger Augmentation and Recovery Project, launched collaboratively in 2018 by the West Bengal Forest Department, NTCA, and WII. According to official data released by the Press Information Bureau, field managers introduced more than 800 spotted deer (chital) to repopulate the herbivore community.

Between 2018 and 2026, park managers restored or converted roughly 380 hectares of degraded land into productive grassland habitats, providing nutritious foraging grounds for expanding ungulate herds.

Community coordination formed another central pillar of the preparatory work:

• Community engagement: The reserve administration engaged fringe settlements through 64 Eco-Development Committees and Joint Forest Management Committees, as reported by the Press Information Bureau.
• Voluntary relocation: As reported by ANI News on 2 October 2026, authorities facilitated the voluntary relocation of two forest villages from the core zone to curb human-wildlife conflict risks.

These systematic management improvements were reflected in the 5th cycle of the Management Effectiveness Evaluation (MEE) of Tiger Reserves in India, where Buxa earned an official rating of 'Good'.

India has built a scientific framework for carnivore reintroductions, guided by the NTCA Standard Operating Procedure for Active Management towards Rehabilitation of Tigers. This protocol mandates comprehensive disease screening, genetic profiling, continuous satellite radio-collaring, and phased soft-release monitoring.

The table below contrasts the Buxa project with previous national reintroduction models:

Securing the long-term survival of reintroduced tigers in Buxa involves navigating distinct operational risks:

• Human-carnivore interfaces: Managing human-wildlife encounters along reserve boundaries bordered by extensive tea plantations and dense rural habitations remains a primary concern.
• Transboundary integrity: Maintaining contiguous pathways into Bhutan's Phibsoo Wildlife Sanctuary and Assam's Manas Tiger Reserve is vital for long-term gene flow, as noted in NTCA corridor reports.

Dispersing tigers require unhindered movement across forest patches to establish independent territories without straying into populated agricultural belts.

The sustainable recovery of tigers in Buxa requires sustained ecological management and institutional collaboration across administrative boundaries:

1. Continuous Prey-Base Monitoring: Forest managers must sustain ungulate breeding programmes and maintain rotational grassland burning to keep fodder grass palatable.
2. Community Stewardship: Expanding alternative livelihood programmes through the 64 Eco-Development Committees will reduce local dependency on minor forest produce and livestock grazing inside core zones.
3. Transboundary Protection: Establishing real-time intelligence sharing and joint patrolling mechanisms between West Bengal, Assam, and Bhutan forest administrations will secure contiguous migration corridors.
4. Active Radio-Telemetry Tracking: Strict adherence to NTCA soft-release monitoring protocols will provide early warning if translocated individuals approach human settlements, allowing timely mitigation.

• On 2 October 2026, Tigress T138 from Valmiki Tiger Reserve was released into a soft-release enclosure in Buxa Tiger Reserve, initiating the park's formal tiger recovery plan.
• Buxa had zero resident tigers in the NTCA 2018 assessment due to severe prey depletion, canopy closure, and disturbance.
• Between 2018 and 2026, authorities released over 800 spotted deer and restored 380 hectares of grassland to rebuild the herbivore base.
• Buxa forms a critical transboundary wildlife corridor linking Bhutan's Phibsoo Wildlife Sanctuary, Manas Tiger Reserve in Assam, and Jaldapara National Park.
• The reintroduction follows statutory NTCA protocols developed after successful recoveries in Panna and Sariska, avoiding the community conflicts observed in Satkosia.