Call Us Now

+91 9606900005 / 04

For Enquiry

Rediscovery of Namdapha Flying Squirrel 


The Namdapha flying squirrel (Biswamoyopterus biswasi) has recently reappeared in Arunachal Pradesh after an absence of 42 years. The last documented sighting was in 1981 when a single individual was observed in the Namdapha Tiger Reserve in the Changlang district of Arunachal Pradesh.


GS III: Environment and Ecology

Dimensions of the Article:

  1. Namdapha Flying Squirrel: A Rare Nocturnal Species
  2. Namdapha Tiger Reserve: Key Points

Namdapha Flying Squirrel: A Rare Nocturnal Species

The Namdapha Flying Squirrel is a rare nocturnal flying squirrel species exclusively found in the Namdapha Tiger Reserve in Arunachal Pradesh, India.

Distinctive Features:

  • Distinguished from the red giant flying squirrel by the notable tuft of hair on its ears, setting it apart in the same ecosystem.

Concerns and Conservation:

  • Difficulty in locating this elusive species has raised concerns, leading to fears of potential misidentification or, worse, extinction.
  • Threats to the Namdapha flying squirrel include habitat loss and degradation due to activities like clear-felling for human settlements, shifting agriculture, and extraction of non-timber forest products, especially leaves of the rattan palm Zalacca secunda used for roofing.

Protection Status:

  • Listed as “Critically Endangered” on the IUCN Red List, signifying a high risk of extinction.
  • Recognized under Schedule I of the Wildlife (Protection) Amendment Act, 2022, emphasizing legal protection measures for its conservation.

Namdapha Tiger Reserve: Key Points

Establishment and Tiger Project Designation:

  • Declared a Wildlife Sanctuary in 1972, Namdapha Tiger Reserve was officially designated as the 15th Tiger Project of India in 1983.

Evolution of Protected Status:

  • Progressing from a Wildlife Sanctuary in 1972, it attained the status of a National Park in 1983.
  • Simultaneously, it became a Tiger Reserve under the Project Tiger scheme in the same year.

Geographic Significance:

  • Named after the Namdapha River, originating from Daphabum, with “Dapha” referring to the hill and “Bum” signifying the peak of the hill.
  • The river flows in a North-South direction across the National Park, influencing its nomenclature.


  • Situated in the state of Arunachal Pradesh, Namdapha Tiger Reserve is positioned between the Dapha Bum range of the Mishmi Hills and the Patkai range.

Climate Variations:

  • Enjoys a sub-tropical climate with distinct variations.
  • Mountainous areas experience a climate typical of high altitudes, while low-lying plains and valleys encounter a tropical climate.

Biodiversity Conservation:

  • As a Tiger Reserve, Namdapha plays a crucial role in the conservation of the Bengal tiger and other diverse flora and fauna within its ecosystem.

Environmental Importance:

  • The reserve’s rich biodiversity and unique geography contribute to its significance in maintaining ecological balance and supporting various endangered species.

-Source: The Hindu

February 2024