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

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Green Peafowl Pavo muticus	EN	resident (2002)	rare	A1, A3
Sarus Crane Grus antigone	VU	breeding (2002)	rare	A1
Lesser Adjutant Leptoptilos javanicus	NT	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

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2003. The most recent assessment (2016) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Biological resource use	happe­ning now	whole of popul­ation/area (>90%)	slow decline (1–10% over 3 gener­ations)	high
Transportation and service corridors	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Agricultural expansion and intensification	likely in short term (<4 years)	few indivi­duals/small area (<10%)	slow decline (1–10% over 3 gener­ations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Most of area (50–90%) covered (including the most critical parts for important bird species)	A management plan exists, but it is out of date or not compre­hensive	Substantive conservation measures are being implemented, but these are not compre­hensive and are limited by resources and capacity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

The Local Conservation Group(s) listed below are working to conserve this IBA.

Name	Year formed
Western Siem Pang Local Conservation Group	2004

For more information on BirdLife's work with Local Conservation Groups, please visit Spotlight on local empowerment.

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

Land use	% of IBA
agriculture	-
not utilised	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Western Siem Pang (Cambodia). Downloaded from https://datazone.birdlife.org/site/factsheet/western-siem-pang-iba-cambodia on 23/12/2024.