• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2023	Near Threatened	C2a(ii)
2016	Vulnerable	B1ab(ii,iii,iv,v);C2a(i)
2013	Vulnerable	B1ab(ii,iii,iv,v);C2a(i)
2012	Vulnerable	B1ab(ii,iii,iv,v);C2a(i)
2008	Vulnerable	B1a+b(ii,iii,iv,v); C2a(i)
2004	Vulnerable
2000	Vulnerable
1996	Vulnerable
1994	Vulnerable
1988	Near Threatened

Migratory status	not a migrant	Forest dependency	high
Land-mass type	continent	Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	28,500 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	2500-20000, 2500-9999 mature individuals	poor	inferred	2018
Population trend	decreasing	poor	suspected	2006-2024
Rate of change over the past 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Generation length	5.95 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The density of this species has not previously been estimated. Other Polyplectron have been recorded at densities of 3.74 birds/km² (P. katsumatae; Gao 1998) and 4.33 calling males/km² (P. germaini; Nguyen et al. 2018). Similar densities (spanning c.2.5-8.5 mature individuals/km²) are inferred for this species. In 2018, Savini et al. (2021) estimated the area of suitable habitat for this species as c.5,600 km² using computation analysis of forest patches larger than 40 km². Assuming approximately c.20-40% of suitable habitat is occupied, the population is inferred to number c.2,500-20,000 mature individuals, with a precautionary best estimate of 2,500-9,999.

Trend justification: Including only patches >40 km² in their analysis, Savini et al. (2021) estimated a minor c.2% contraction in suitable habitat between 2000 and 2018, while Global Forest Watch (2022) indicates a similar reduction of c.3.1% forest loss over three generations (18 years; Bird et al. 2020) between 2003 and 2021. As a highly forest-dependent species, these losses are suspected of causing proportional population size impacts. The majority of these losses are at the species' lowest altitudinal limits, with higher elevation forest remaining intact. This species may be impacted by disturbances caused by roads linking hill stations and, more locally, by some moderate hunting pressures. It is suspected to be declining at an ongoing rate of 1-9% over three generation time periods.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Malaysia	extant	native	yes
Thailand	extant	native	yes

Country/Territory	IBA Name
Malaysia	Bintang Range
Malaysia	Central Titiwangsa Range
Malaysia	Krau Wildlife Reserve
Malaysia	Selangor Heritage Park
Malaysia	Taman Negara National Park
Thailand	Hala Sector, Hala-Bala Wildlife Sanctuary and Bang Lang National Park

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	820 - 1800 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Agro-industry farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Species mortality
Residential & commercial development	Commercial & industrial areas	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Transportation & service corridors	Roads & railroads	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion

Purpose	Scale
Food - human	subsistence

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Recommended citation
BirdLife International (2024) Species factsheet: Mountain Peacock-Pheasant Polyplectron inopinatum. Downloaded from https://datazone.birdlife.org/species/factsheet/mountain-peacock-pheasant-polyplectron-inopinatum on 23/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 23/12/2024.