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Location Laos, Khammouan
Central coordinates 105o 11.00' East  17o 49.00' North
IBA criteria A1, A3, A4i
Area 136,550 ha
Altitude 400 - 800m
Year of IBA assessment 2003

BirdLife Indochina Programme (Country programme)



Site description The IBA is located on the Nakai plateau, in central Lao P.D.R., and is partly included within Nakai-Nam Theun National Protected Area. The topography of the IBA is largely flat, at elevations between 500 to 600 m asl. The vegetation of the IBA is dominated by a mosaic of old-growth pine forest and semi-evergreen forest (Evans and Timmins 1998). The IBA is drained by the Nam Theun and its many tributaries, which support riverine dry evergreen forest (Thewlis et al. 1998). Pools and marshes are numerous in the centre of the IBA, although many have been the focus of human settlement and are degraded (Thewlis et al. 1998). The rivers within the IBA are important for the conservation of a number of species, including White-winged Duck Cairina scutulata, Blyth's Kingfisher Alcedo hercules, River Lapwing Vanellus duvaucelii and Lesser Fish Eagle Ichthyophaga humilis (Evans et al. 1997, Duckworth et al. 1998a, Evans and Timmins 1998). Of these, the population of White-winged Duck is the most significant, as it is one of the largest known populations of this globally endangered species in Lao P.D.R. (Evans et al. 1997, Thewlis et al. 1998). The IBA, together with contiguous forested lower mountain slopes, supports an important population of Brown Hornbill Anorrhinus tickelli (Evans and Timmins 1998), although the forests of the IBA do not, by themselves, have an exceptional bird fauna (R. J. Timmins in litt. 2002). In addition, the IBA is the only site in Lao P.D.R. from where there are recent confirmed records of Wood Snipe Gallinago nemoricola and Grey-sided Thrush Turdus feae, although, at least in the case of the latter species, which is known to be irregular in non-breeding occurrence, the IBA may not be of great importance for their conservation. Finally, the IBA supports part of one of the two largest populations of Asian Elephant Elephas maximus remaining in Lao P.D.R. (Duckworth et al. 1999).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Red-vented Barbet Psilopogon lagrandieri resident  2002  common  A3  Least Concern 
Lineated Barbet Psilopogon lineatus resident  2002  common  A3  Least Concern 
Green-eared Barbet Psilopogon faiostrictus resident  2002  common  A3  Least Concern 
Moustached Barbet Psilopogon incognitus resident  2002  common  A3  Least Concern 
Green-legged Partridge Arborophila chloropus resident  2002  frequent  A3  Least Concern 
Grey Peacock-pheasant Polyplectron bicalcaratum resident  2002  common  A3  Least Concern 
Bar-backed Partridge Arborophila brunneopectus resident  2002  unknown  A3  Least Concern 
Silver Pheasant Lophura nycthemera resident  2002  frequent  A3  Least Concern 
Siamese Fireback Lophura diardi resident  2002  uncommon  A3  Least Concern 
White-winged Duck Asarcornis scutulata resident  2002  frequent  A1, A4i  Endangered 
Pied Falconet Microhierax melanoleucos resident  2002  frequent  A3  Least Concern 
River Lapwing Vanellus duvaucelii resident  2002  abundant  A4i  Near Threatened 
Wood Snipe Gallinago nemoricola passage  2002  uncommon  A1  Vulnerable 
Grey-headed Parakeet Psittacula finschii resident  2002  common  A3  Near Threatened 
Asian Emerald Cuckoo Chrysococcyx maculatus passage  2002  uncommon  A3  Least Concern 
Coral-billed Ground-cuckoo Carpococcyx renauldi resident  2002  frequent  A3  Least Concern 
Blyth's Kingfisher Alcedo hercules resident  2002  frequent  A3  Near Threatened 
Austen's Brown Hornbill Anorrhinus austeni resident  2002  common  A3  Near Threatened 
Red-collared Woodpecker Picus rabieri resident  2002  unknown  A3  Near Threatened 
Pale-headed Woodpecker Gecinulus grantia resident  2002  uncommon  A3  Least Concern 
Bay Woodpecker Blythipicus pyrrhotis resident  2002  common  A3  Least Concern 
Black-and-buff Woodpecker Meiglyptes jugularis resident  2002  uncommon  A3  Least Concern 
Blue-rumped Pitta Pitta soror resident  2002  unknown  A3  Least Concern 
Blue Pitta Pitta cyanea resident  2002  unknown  A3  Least Concern 
Black-winged Cuckooshrike Coracina melaschistos resident  2002  unknown  A3  Least Concern 
Brown-rumped Minivet Pericrocotus cantonensis passage  2002  uncommon  A3  Least Concern 
Small Minivet Pericrocotus cinnamomeus resident  2002  unknown  A3  Least Concern 
Burmese Shrike Lanius collurioides resident  2002  uncommon  A3  Least Concern 
Maroon Oriole Oriolus traillii resident  2002  frequent  A3  Least Concern 
Grey Treepie Dendrocitta formosae resident  2002  unknown  A3  Least Concern 
Racket-tailed Treepie Crypsirina temia resident  2002  common  A3  Least Concern 
Sultan Tit Melanochlora sultanea resident  2002  common  A3  Least Concern 
Sooty-headed Bulbul Pycnonotus aurigaster resident  2002  common  A3  Least Concern 
Stripe-throated Bulbul Pycnonotus finlaysoni resident  2002  common  A3  Least Concern 
Grey-eyed Bulbul Iole propinqua resident  2002  common  A3  Least Concern 
Asian Black Bulbul Hypsipetes leucocephalus resident  2002  common  A3  Least Concern 
Sulphur-breasted Warbler Phylloscopus ricketti resident  2002  uncommon  A3  Least Concern 
Yellow-vented Warbler Phylloscopus cantator passage  2002  frequent  A2  Least Concern 
Lesser Necklaced Laughingthrush Garrulax monileger resident  2002  unknown  A3  Least Concern 
Greater Necklaced Laughingthrush Garrulax pectoralis resident  2002  unknown  A3  Least Concern 
Black-throated Laughingthrush Garrulax chinensis resident  2002  unknown  A3  Least Concern 
Indochinese Fulvetta Alcippe danisi resident  2002  frequent  A3  Least Concern 
Grey-cheeked Fulvetta Alcippe morrisonia resident  2002  common  A3  Least Concern 
Chestnut-tailed Starling Sturnus malabaricus resident  2002  uncommon  A3  Least Concern 
White-shouldered Starling Sturnus sinensis resident  2002  uncommon  A3  Least Concern 
Black-collared Starling Sturnus nigricollis resident  2002  uncommon  A3  Least Concern 
Black-breasted Thrush Turdus dissimilis passage  2002  unknown  A3  Least Concern 
Hainan Blue-flycatcher Cyornis hainanus resident  2002  frequent  A3  Least Concern 
Fujian Niltava Niltava davidi passage  2002  unknown  A3  Least Concern 
Orange-bellied Leafbird Chloropsis hardwickii resident  2002  frequent  A3  Least Concern 
Fork-tailed Sunbird Aethopyga christinae resident  2002  frequent  A3  Least Concern 
Streaked Spiderhunter Arachnothera magna resident  2002  unknown  A3  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Corridor Nakai - Nam Theun and Phou Hin Poun National Biodiversity Conservation Area 154,340 protected area overlaps with site 43,520  
Nakai - Nam Theun National Biodiversity Conservation Area 353,200 protected area overlaps with site 80,000  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest Dry evergreen forest (tropical); Pine forest (subtropical); Semi-evergreen rain forest (tropical)  -
Wetlands (inland) Freshwater lakes and pools; Rivers and streams  -
Artificial - terrestrial   -

Land use

Land-use Extent (% of site)
agriculture -
nature conservation and research -

Other biodiversity Timmins and Evan (1996) recorded five species of other important fauna: Sunda Pangolin M. javanica, Dhole C. alpinus, Asiatic Black Bear U. thibetanus, Sun Bear U. malayanus and Oriental Small-clwed Otter A. cinerea.Timmins and Evans (1996) recorded three species of primate: Slow Loris Nycticebus coucang, Pig-tailed Macaque Macaca nemestrina and a gibbon species Hylobates sp.Timmins and Evans (1996) recorded three species of elephant and ungulate: Asian Elephant Elephas maximus, Gaur Bos gaurus and Banteng B. javanicus.

Further web sources of information 

Site account from Important Bird Areas in Lao P.D.R. (Ounekham and Inthapatha 2003)

References Document nameDuckworth, J. W., Tizard, R. J., Timmins, R. J., Thewlis, R. M., Robichaud, W. G. and Evans, T. D. (1998) Bird records from Laos, October 1994-August 1995. Forktail 13: 33-68 (including errata sheet distributed with Forktail 14)..Thewlis, R. M., Timmins, R. J., Evans, T. D. and Duckworth, J. W. (1998) The conservation status of birds in Laos: a review of key species. Bird Conserv. Internat. 8(suppl.): 1-159.Evans, T. D. and Timmins, R. J. (1998) Records of birds from Laos during January-July 1994. Forktail 13: 69-96.Duckworth, J. W., Timmins, R. J. and Evans, T. D. (1998) The conservation status of the River Lapwing Vanellus duvaucelii in southern Laos. Biol. Conserv. 84: 215-222.Evans, T. D., Robichaud, W. G. and Tizard, R. J. (1997) The White-winged Duck Cairina scutulata in Laos. Wildfowl 47: 81-96.Duckworth, J. W., Salter, R. E. and Khounboline, K. eds. (1999) Wildlife in Lao P.D.R.: 1999 status report. Vientiane: IUCN, WCS and CPAWM.

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Nakai Plateau. Downloaded from http://www.birdlife.org on 20/08/2014

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