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Location India, Andaman and Nicobar
Central coordinates 93o 31.00' East  8o 12.00' North
IBA criteria A1, A2
Area 1,683 ha
Altitude 0 - 323m
Year of IBA assessment 2004

Bombay Natural History Society

Site description The Nicobar Islands can be divided into three distinct subgroups: the Great Nicobar subgroup, the Nancowry subgroup and the Car Nicobar subgroup. Tillanchong, Camorta, Katchal, Nancowry and Trinkat Islands lie in the Nancowry subgroup of islands, c. 58 km north of the Great Nicobar subgroup. This subgroup consists of 10 islands and smaller islets of which one island and two islets are uninhabited (Sankaran 1998). Of these, three islands are larger than 100 sq. km, two are 36 and 67 sq. km and three are less than 17 sq. km. Tillanchong is uninhabited and a wildlife Sanctuary (Sankaran 1995). The climate of these islands can be defined as humid, tropical coastal. The islands receive rainfall from both the southwest and northeast monsoon, with maximum precipitation between May and December, and the driest period between January and April (Sankaran 1995). The forest type of the Nicobar Islands can be broadly classified as Andaman Tropical Evergreen, Andaman Semi-Evergreen, Littoral Forest and Tidal Swamp Forest (Mangrove), the inland areas being either forested or grasslands, and a significant proportion of the coast being mangroves.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Nicobar Scrubfowl Megapodius nicobariensis resident  2004  present  A1, A2  Vulnerable 
Nicobar Sparrowhawk Accipiter butleri resident  2004  present  A1, A2  Vulnerable 
Andaman Woodpigeon Columba palumboides resident  2004  present  A2  Near Threatened 
Andaman Cuckoo-dove Macropygia rufipennis resident  2004  present  A2  Near Threatened 
Andaman Boobook Ninox affinis resident  2004  present  A2  Near Threatened 
Nicobar Bulbul Hypsipetes nicobariensis resident  2004  present  A1, A2  Near Threatened 
White-headed Starling Sturnus erythropygius 2004  present  A2  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Tillongchang Island Sanctuary 3,643 is identical to site 1,683  


IUCN habitat Habitat detail Extent (% of site)
Forest   -
Grassland   -
Coastline   -
Artificial - terrestrial   -

Land use

Land-use Extent (% of site)
agriculture -
Notes: Agriculture
fisheries/aquaculture -
Notes: Fisheries
forestry -
Notes: Plantations
nature conservation and research -
Notes: Nature conservation and research
tourism/recreation -
Notes: Tourism and recreation
urban/industrial/transport -
Notes: Transport

Acknowledgements Key contributors: Ravi Sankaran and K. Sivakumar.


Abdulali, H. (1964) The Birds of the Andaman and Nicobar Islands. J. Bombay Nat. Hist. Soc. 61(3): 483-571.

Abdulali, H. (1967) The Birds of the Nicobar Islands, with notes on some Andaman Birds. J. Bombay Nat. Hist. Soc. 64(2): 139-190.

Ali, S. and Ripley, S. D. (1987) Compact Handbook of the Birds of India and Pakistan (Second Edition). Oxford University Press, Delhi.

Anonymous (2001) Reptile CAMP Handbook. Vol. I. Reptiles endemic to India. South Asian Reptile Network, Zoo Outreach Organization, Coimbatore.

BirdLife International (2001) Threatened Birds of Asia: BirdLife International Red Data Book. BirdLife International, Cambridge, U.K.

Das, P. K. (1971) New records of birds from the Andaman and Nicobar Islands. J. Bombay Nat. Hist. Soc. 68: 459-461.

Grimmett, R., Inskipp, C. and Inskipp, T. (1998) Birds of the Indian Subcontinent. Christopher Helm (Publishers) Ltd., London, U.K.

Inskipp, T., Lindsey, N. and Duckworth, W. (1996) An Annotated Checklist of the Birds of the Oriental Region. Oriental Bird Club, U.K.

Rasmussen, P. C. and Anderton, J. C. (in press) Birds of South Asia: the Ripley guide. Lynx Edicions, Barcelona.

Sankaran, R. (1995) The Nicobar Megapode and other endemic Avifauna of the Nicobar Islands status and Conservation. SACON Technical Report 2, Salim Ali Center for Ornithology and Natural History, Coimbatore, India.

Sankaran, R. (1998) An Annotated checklist of the endemic avifauna of the Nicobar Islands. Forktail 13, 17-22.

Sivakumar, K. and Sankaran, R. (2002) New records of birds from the Andaman and Nicobar Islands. Forktail 18: 149-150.

Stattersfield, A. J., Crosby, M. J., Long, A. J. Wege, D. C. (1998) Endemic Bird Areas of the World: Priorities for Biodiversity Conservation. BirdLife Conservation Series No. 7. BirdLife International, Cambridge.

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Tillangchong, Camorta, Katchal, Nancowry and Trinkat. Downloaded from on 29/08/2014

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