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The site was identified as important in 2003 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):

Species	Current IUCN Red List Category	Season	Year(s)	Population estimate at site	IBA criteria met
Green Peafowl Pavo muticus	EN	resident	2002	rare	A1, A3
Sarus Crane Grus antigone	VU	unknown	2002	rare	A1
Lesser Adjutant Leptoptilos javanicus	VU	resident	2002	rare	A1
White-shouldered Ibis Pseudibis davisoni	CR	resident	2002	common	A1
Giant Ibis Thaumatibis gigantea	CR	resident	2002	rare	A1, A4i
Red-headed Vulture Sarcogyps calvus	CR	non-breeding	2002	rare	A3
White-rumped Vulture Gyps bengalensis	CR	non-breeding	2002	rare	A1, A3
Slender-billed Vulture Gyps tenuirostris	CR	non-breeding	2002	present	A1
Greater Spotted Eagle Clanga clanga	VU	winter	2002	rare	A1
Rufous-winged Buzzard Butastur liventer	LC	resident	2002	common	A3
Lineated Barbet Psilopogon lineatus	LC	resident	2002	common	A3
Small Minivet Pericrocotus cinnamomeus	LC	resident	2002	common	A3
Common Woodshrike Tephrodornis pondicerianus	LC	resident	2002	common	A3
White-browed Fantail Rhipidura aureola	LC	resident	2002	common	A3
Brown Prinia Prinia polychroa	LC	resident	2002	common	A3
Sooty-headed Bulbul Pycnonotus aurigaster	LC	resident	2002	common	A3
Streak-eared Bulbul Pycnonotus blanfordi	LC	resident	2002	common	A3

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2003).

Pressure (threats to the trigger species and/or their habitats)
Threat level 1	Threat level 2	Timing	Scope	Severity	Result
Agricultural expansion and intensification	annual & perennial non-timber crops - agro-industry farming	likely in short term (within 4 years)	small area/few individuals (<10%)	slow but significant deterioration	low
Biological resource use	hunting & collecting terrestrial animals - unintentional effects (species is not the target)	happening now	whole area/population (>90%)	slow but significant deterioration	high
Biological resource use	logging & wood harvesting - unintentional effects: large scale	likely in short term (within 4 years)	whole area/population (>90%)	very rapid to severe deterioration	very high
Transportation and service corridors	roads and railroads	happening now	some of area/population (10-49%)	slow but significant deterioration	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Protected-area designation	Management planning	Other conservation action	Result
Most of site (50-90%) covered (including the most critical parts for important bird species)	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

For more information about IBA conservation status, please click here

The Local Conservation Groups listed below are working to support conservation at this IBA.

Name	Year formed
Western Siem Pang Local Conservation Group	2004

For more information on BirdLife's work with Local Conservation Groups, please click here.

Habitat (IUCN level 1)	Habitat detail	Extent (% of site)
Forest	Lowland evergreen rain forest (tropical), Semi-evergreen rain forest (tropical), Dry deciduous forest (tropical)	-
Shrubland	Secondary scrub	-
Grassland	Edaphic grassland	-
Wetlands (inland)	Rivers and streams, Freshwater lakes and pools, Ephemeral wetlands	-
Artificial/Terrestrial	Rice paddies, Perennial crops, orchards and groves, Forestry and agro-industrial plantations, Small settlements, rural gardens	-

For more information about the IUCN Habitat classification, please click here.

Land-use	Extent (% of site)
agriculture	-
not utilised	-

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Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Western Siem Pang. Downloaded from http://datazone.birdlife.org/site/factsheet/western-siem-pang-iba-cambodia on 27/09/2023.