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Location Thailand, Kamphaeng Phet,Nakhon Sawan
Central coordinates 99o 14.00' East  15o 53.00' North
IBA criteria A1, A2, A3
Area 89,063 ha
Altitude 140 - 1,960m
Year of IBA assessment 2004

Bird Conservation Society of Thailand

Site description The IBA comprises Mae Wong National Park, which forms part of the Western Forest Complex, the largest block of contiguous natural forest in Thailand. The site adjoins Umphang Wildlife Sanctuary (IBA TH024) to the west, Khlong Lan National Park to the north and Huai Kha Khaeng Wildlife Sanctuary (IBA TH026) to the south. Mixed deciduous forest is the dominant forest type, covering c.66,300 ha of the site. Hill evergreen forest is found at higher elevations and covers c.16,200 ha. Dry evergreen forest and deciduous dipterocarp forest are found locally in smaller patches. Shifting cultivation has modified some of the middle and lower elevation forest habitats in some areas.

Key Biodiversity The site supports a population of the globally threatened Rufous-necked Hornbill Aceros nipalensis. Two other globally threatened species, Pale-capped Pigeon Columba punicea and Spot-billed Pelican Pelecanus philippensis, occur irregularly as non-breeding visitors. The site is situated within the Myanmar-Thailand Mountains Secondary Area (SA080), as it supports Burmese Yuhina Yuhina humilis, the restricted-range species that defines this Secondary Area. The site also supports two globally near-threatened species: Great Hornbill Buceros bicornis and Brown Hornbill Anorrhinus tickelli. The highest mountain at the site, Doi Mukoju, supports a number of bird species characteristic of upper montane forest that reach the southern edge of their distributions in this and adjacent areas, including Rusty-capped Fulvetta Alcippe dubia, Chestnut-tailed Minla Minla strigula, Yellow-bellied Fantail Rhipidura hypoxantha, Brown-throated Treecreeper Certhia discolor, White-browed Shortwing Brachypteryx montana and Green-tailed Sunbird Aethopyga nipalensis. The latter may be the endemic subspecies A. n. angkanensis known from Doi Inthanon National Park (IBA TH001). In addition, Crested Kingfisher Megaceryle lugubris, a nationally threatened species, also occurs. The site qualifies under criterion A3 because it supports 15 species restricted to the Indochinese Tropical Moist Forests (Biome 09).

Non-bird biodiversity: Mammals Banteng Bos javanicus EN Asian Asian Elephant Elephas maximus EN Tiger Panthera tigris EN Southern Serow Capricornis sumatraensis VU Golden Cat Catopuma temminckii VU Dhole Cuon alpinus VU East Asian Porcupine Hystrix brachyura VU Northern Pig-tailed Macaque Macaca leonina VU Plants Afzelia xylocarpa EN Anisoptera costata EN Dalbergia oliveri EN Dipterocarpus alatus EN Shorea roxburghii EN Hopea odorata VU Wrightia lecomtei VU

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Rufous-necked Hornbill Aceros nipalensis resident  2004  present  A1  Vulnerable 

IBA Monitoring

2013 high not assessed medium

Agriculture and aquaculture annual & perennial non-timber crops - small-holder farming past (and unlikely to return) and no longer limiting some of area/population (10-49%) no or imperceptible deterioration low
Biological resource use logging & wood harvesting - unintentional effects: subsistence/small scale happening now some of area/population (10-49%) slow but significant deterioration medium
Energy production and mining renewable energy likely in short term (within 4 years) some of area/population (10-49%) very rapid to severe deterioration high

Whole area of site (>90%) covered by appropriate conservation designation  A management plan exists but it is out of date or not comprehensive  Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity  medium 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Huay Kha Khaeng Wildlife Sanctuary 281,279 protected area is adjacent to site 0  
Mae Wong National Park 89,041 is identical to site 89,041  
Thungyai - Huai Kha Khaeng Wildlife Sanctuaries World Heritage Site 577,464 protected area is adjacent to site 0  
Um-Phang Wildlife Sanctuary 248,915 protected area is adjacent to site 0  


IUCN habitat Habitat detail Extent (% of site)
Forest   -

References Bird Conservation Society of Thailand Bulletin 20(4):16-20 (April 2003). BirdLife International (1998) Proceedings of the Thailand IBA workshop, Bangkok, November 1998. Unpublished report. BirdLife International (2001) Threatened birds of Asia: the BirdLife International Red Data Book. Cambridge, UK: BirdLife International. Chantraratien, R. et al. (2001) The Western Forest Complex: the largest forest in Thailand. Bangkok: Seub Nakhasathien Foundation. Conservation Data Center, Department of Biology, Faculty of Science, Mahidol University, Bangkok. Division of Survey and Natural Resources Management Planning (undated) Preliminary master plan for Mae Wong National Park land use management. Unpublished report to the Land Resources and Forest Section, Office of Natural Resources Conservation, Royal Forestry Department. National Park Division (2001) National parks in Thailand. Bangkok: Office of Natural Resource Conservation, Royal Forestry Department.

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Mae Wong. Downloaded from on 26/10/2016

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