Sikhna Jwhwlao National Park: Mapping the Protected Landscape and Transboundary Geography of Assam

Sikhna Jwhwlao National Park is best known for its role within the Manas Biosphere Reserve landscape, where it links four adjoining protected areas and strengthens wildlife corridors along the Indo-Bhutan border. The presence of the golden langur, an iconic primate of the region, alongside flagship species such as the greater one-horned rhinoceros, Royal Bengal tiger, and Asian elephant, gives the park strong conservation credentials despite its very recent establishment. The park is also distinguished by its outstanding butterfly diversity, with more than 460 recorded species, making it a significant area for invertebrate conservation in northeast India. Equally important is its cultural identity: the park is named after Sikhna Jwhwlao, a Bodo warrior leader of the Duar War era, and contains sites considered sacred by the local Bodo community, where traditional festivals continue to be observed.

Sikhna Jwhwlao National Park has a short formal history as a designated protected area, but it emerges from a much longer cultural and ecological back story. The Government of Assam formally approved the creation of the national park during a Cabinet meeting held on 16 February 2025. Shortly afterward, the park was officially notified by the Governor of Assam on 5 March 2025, under the provisions of the Wildlife (Protection) Act, 1972. This designation made it the third national park in Bodoland and the eighth in Assam as a whole.

Although the legal protection is recent, the area has long been recognised as ecologically important through its association with the Manas Biosphere Reserve. The park's inclusion within this broader reserve framework reflects decades of conservation attention directed at the Manas landscape and its role as a hub for species such as the greater one-horned rhinoceros, the Royal Bengal tiger, and the golden langur.

Beyond conservation, the site's history is deeply intertwined with the cultural memory of the Bodo people. The park takes its name from Sikhna Jwhwlao, also known as Joulia Dewan, a legendary Bodo warrior and leader who resisted British colonial forces during the Duar War of 1864 to 1866. His historical capital, known as Sikhnajhar or Chiknajhar, lay in what is now the Ultapani Reserve, which falls within the current park boundaries. The site remains sacred to the Bodo community, where festivals such as Bathou Puja and Kherai are observed annually, anchoring the park's modern conservation identity in a deeper regional heritage.

Sikhna Jwhwlao National Park occupies a strategic position in the sub-Himalayan foothills of Assam, along the Indo-Bhutan border. The terrain reflects the transition between the plains of the Brahmaputra valley and the foothills of the lower Himalayas, producing a varied topography shaped by rivers, gentle ridges, and forest valleys. The park spans parts of both Chirang and Kokrajhar districts, and its proximity to the international boundary gives it a distinctive transboundary landscape character.

Watercourses and riverine corridors are an important part of the park's physical setting, supporting both floodplain grasslands and moist forest patches. Within the broader Manas landscape, the park contributes to a connected matrix of habitat that includes dense forest stands, open grassy stretches, and riparian zones. This landscape diversity creates varied conditions across the protected area, from shaded closed-canopy interiors to more open and dynamic river-edge environments.

The park's relatively compact footprint of roughly 316 square kilometres, combined with its location linking four other protected areas, gives its terrain particular importance for landscape-scale ecological processes. Movement of large mammals, seasonal flooding patterns, and forest regeneration all depend on the continuity of these landforms across the wider Manas-Bhutan landscape that the park now helps anchor.

The ecosystems within Sikhna Jwhwlao National Park reflect the ecological richness typical of the Manas Biosphere Reserve region in lower Assam. Habitats include moist deciduous forest, stretches of grassland, and significant riverine corridors along the Indo-Bhutan frontier. These habitat types combine to produce a mosaic that supports species requiring both forest cover and open areas, as well as animals tied closely to water.

Because the park forms part of the broader Manas Biosphere Reserve and connects four neighbouring protected areas, its nature is best understood in a regional context. The park contributes to maintaining ecological processes such as seasonal flooding, forest regeneration, and wildlife dispersal across a landscape that extends into Bhutan. This connectivity makes the park's habitats especially important for wide-ranging species that need large territories and stable ecological conditions.

The vegetation and habitat diversity of the park also support an exceptionally rich invertebrate fauna. The presence of more than 460 recorded butterfly species highlights the structural and floral complexity of the habitats within the park, indicating that even small changes in forest composition can sustain a remarkable array of pollinators and dependent organisms.

Sikhna Jwhwlao National Park supports a remarkable diversity of wildlife, reflecting its position within the Manas Biosphere Reserve and its location along the Indo-Bhutan border. The park is particularly notable for its population of the golden langur, a primate of high conservation significance that is closely associated with the Manas region. This presence alone gives the park strong wildlife value, as the species remains restricted to a relatively narrow belt of habitat on either side of the international boundary.

In addition to the golden langur, the park provides habitat for several of northeast India's most iconic large mammals. The greater one-horned rhinoceros, the Royal Bengal tiger, and the Asian elephant all occur within or use habitats associated with the park, reinforcing its role as a key refuge within the Manas landscape. The combination of forest cover, grasslands, and riverine habitat creates conditions favourable to these wide-ranging species.

The park's invertebrate fauna is equally significant. With more than 460 butterfly species recorded, the park stands out as an important area for pollinator diversity in South Asia. The interplay between flagship mammals and a poorly understood but rich invertebrate fauna underscores the park's value for both broad public recognition and detailed ecological study.

As a recently notified national park under India's Wildlife (Protection) Act, 1972, Sikhna Jwhwlao represents an important step in strengthening the protected-area network of the Manas Biosphere Reserve. Its designation formalises protection for a strategic corridor of land that connects four other protected areas, addressing one of the core conservation challenges in the region: habitat fragmentation.

The park's transboundary position, along the Indo-Bhutan border, gives it particular conservation significance. By consolidating habitat connectivity, it supports the long-term viability of wide-ranging species such as the Royal Bengal tiger, the Asian elephant, and the greater one-horned rhinoceros, as well as more habitat-restricted species like the golden langur. Effective management of the park will play a role in maintaining genetic exchange and seasonal movement patterns across the wider Manas-Bhutan landscape.

The park's conservation profile is further strengthened by its recognition of insect biodiversity. The record of more than 460 butterfly species elevates the park's importance in invertebrate conservation, often an underrepresented component of protected-area planning. Combined with strong cultural and ecological linkages, this gives Sikhna Jwhwlao a multi-dimensional conservation role from the very outset of its formal existence.

Sikhna Jwhwlao National Park is intimately connected to the cultural identity of the Bodo people. The park is named after Sikhna Jwhwlao, also known as Joulia Dewan, a renowned Bodo warrior and leader who led resistance against British colonial forces during the Duar War of 1864 to 1866. His historical capital, referred to as Sikhnajhar or Chiknajhar, was located in the present-day Ultapani Reserve, which now lies within the park boundaries.

The site associated with Sikhna Jwhwlao is considered sacred by the local Bodo community. Traditional religious festivals, including Bathou Puja and Kherai, continue to be observed at this location annually, anchoring the park's identity to living cultural practice rather than purely historical memory. This sacred dimension means that the park is not only a biodiversity reserve but also a landscape of cultural continuity.

The naming of the park after a revered historical figure also reflects a broader effort to recognise regional heritage within conservation frameworks. By integrating cultural and ecological values, Sikhna Jwhwlao illustrates how national park designation in Assam can serve as both a tool for biodiversity protection and a means of affirming indigenous heritage.

Sikhna Jwhwlao National Park stands out for its strategic role within the Manas Biosphere Reserve, where it links four neighbouring protected areas and anchors a transboundary corridor along the Indo-Bhutan border. Its combination of moist deciduous forest, grasslands, and riverine habitats makes it a stronghold for flagship species such as the golden langur, the greater one-horned rhinoceros, the Royal Bengal tiger, and the Asian elephant.

Equally distinctive is the park's record of more than 460 butterfly species, which underscores the richness of its habitat mosaic. Layered on top of this is a powerful cultural dimension tied to the legacy of Sikhna Jwhwlao, a Bodo warrior of the Duar War era, whose former capital within the park remains a site of annual traditional festivals.

Given its location in the sub-Himalayan foothills of Assam and its inclusion within the Manas landscape, Sikhna Jwhwlao National Park shares the seasonal character of the wider region. The cooler, drier months typically offer more comfortable conditions for exploring forest and grassland habitats, while the warmer monsoon period brings heavy rainfall that transforms rivers, wetlands, and grasslands into highly active wildlife viewing environments.

Seasonal flooding and lush vegetation during and after the monsoon contribute to the park's dynamic landscape and can enhance sightings of water-dependent species. Cooler months tend to be associated with clearer forest interiors and more active mammal movement in open areas. As a very recently designated national park, visitors should look to guidance from managing authorities when planning a trip.