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Location Thailand, Narathiwat
Central coordinates 101o 49.00' East  5o 50.00' North
IBA criteria A1, A3
Area 16,916 ha
Altitude 100 - 953m
Year of IBA assessment 2004

Bird Conservation Society of Thailand

Site description The IBA comprises the Bala sector of Hala-Bala Wildlife Sanctuary, which is located at the southernmost tip of peninsular Thailand, on the international border with Malaysia. To the west of the site is the Hala sector of Hala-Bala Wildlife Sanctuary (within IBA TH059), from which the site is separated by a major highway, which forms an effective barrier to the dispersal of some species. The topography of the site is more predominantly lowland than that of the Hala sector. Due to the wet, aseasonal climate, the site supports wet evergreen forest.

Key Biodiversity The site supports a rich and diverse lowland evergreen forest avifauna, with a significant Sundaic component. All six globally threatened species recorded at the site are characteristic of the Sundaic region. These include Short-toed Coucal Centropus rectunguis, which is only known from one other site in Thailand (Hala Sector, Hala-Bala Wildlife Sanctuary and Bang Lang National Park, IBA TH059). The site supports at least 63 globally near-threatened species, including two species known from nowhere else in Thailand: Garnet Pitta Pitta granatina and Finsch's Bulbul Alophoixus finschii. The site also supports seven hornbill species, a diversity unparalleled in the rest of the country, comprising Helmeted Hornbill Buceros vigil, Rhinoceros Hornbill B. rhinoceros, Great Hornbill B. bicornis, Plain-pouched Hornbill Aceros subruficollis, Wrinkled Hornbill A. corrugatus, White-crowned Hornbill A. comatus and Black Hornbill Anthracoceros malayanus. The site qualifies under criterion A3 because it supports 111 species restricted to the Sundaic Lowland Forests (Biome 14).

Non-bird biodiversity: The following list of globally threatened species is a combined list for both sectors of Hala-Bala Wildlife Sanctuary; some of the species on the list may not occur in the Bala sector but only in the Hala sector. Mammals Hairy Rhinoceros Dicerorhinus sumatrensis (CR) Asian Elephant Elephas maximus (EN) Tiger Panthera tigris (EN) Asian Tapir Tapirus indicus (EN) Clouded Leopard Neofelis nebulosa (VU) Reptiles Spiny Turtle Heosemys spinosa (EN) Elongated Tortoise Indotestudo elongata (EN) Asian Giant Tortoise Manouria emys (EN) Cantor's Giant Softshell Pelochelys cantorii (EN) Giant Asian Pond Turtle Heosemys grandis (VU) Malayan Flat-shelled Turtle Notochelys platynota (VU) Amphibians Larut Hills Caecilian Caudacaecilia larutensis (VU) Supachai's Caecilian Ichthyophis supachaii (VU) Plants Dipterocarpus dyeri (CR) Dipterocarpus grandiflorus (CR) Dipterocarpus kerrii (CR) Shorea farinosa (CR) Shorea singkawang (CR) Anisoptera curtisii (EN) Dipterocarpus costatus (EN) Hopea pedicellata (EN) Shorea faguetiana (EN) Shorea henryana (EN) Shorea leprosula (EN) Vatica stapfiana (EN) Canarium pseudodecumanum (VU) Cotylelobium lanceolatum (VU) Cynometra inaequifolia (VU) Fordia pauciflora (VU) Hopea griffithii (VU) Knema hookerana (VU) Neobalanocarpus heimii (VU)

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Wallace's Hawk-eagle Nisaetus nanus resident  2004  present  A1  Vulnerable 
Large Green-pigeon Treron capellei resident  2004  present  A1  Vulnerable 
Short-toed Coucal Centropus rectunguis resident  2004  present  A1  Vulnerable 
White-fronted Scops-owl Otus sagittatus resident  2004  present  A1  Vulnerable 
Alcedo euryzona resident  2004  present  A1  Not Recognised 
Plain-pouched Hornbill Rhyticeros subruficollis 2004  present  A1  Vulnerable 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Hala - Bala Wildlife Sanctuary 40,794 protected area contains site 16,916  


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

References Bird Conservation Society of Thailand Bulletin 19(4) (April 2002). 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. Niyomdham, C. (2000) Hala-Bala: the tropical rain forest of southern Thailand. Bangkok: Royal Forestry Department. Round, P. D. (1998) Preliminary list of birds known from Hala-Bala Wildlife Sanctuary and surrounding Yala and Narathiwat provinces. Bangkok: Center for Conservation Biology, Science Faculty, Mahidol University. Wildlife Conservation Division (2000) Basic data for wildlife sanctuaries in Thailand. Bangkok: Office of Natural Resources Conservation, Forestry Department.

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Bala Sector, Hala-Bala Wildlife Sanctuary. Downloaded from on 27/10/2016

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