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

Taxonomic note
Previously listed as a subspecies of C. banyumas, together with C. montanus (del Hoyo and Collar 2016). For differences from C. montanus and C. banyumas, see those species. Four subspecies recognised.

Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2022. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 7. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v7_Dec22.zip.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2022	Least Concern
2016	Not Recognised
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Migratory status	altitudinal migrant	Forest dependency	does not normally occur in forest
Land-mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	3,280,000 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	-
Generation length	2.62 years	-	-	-
Number of subpopulations	4	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The population size is unknown, but the species is described as common or locally common throughout much of South-East Asia (Robson 2008), very common in Thailand and Peninsular Malaysia and common in Borneo and Sumatra (del Hoyo et al. 2006).

Trend justification: This species is moderately forest dependent and suspected of declining in response to forest loss throughout the Indomalayan region, equivalent to c.4% over the past ten years (Global Forest Watch 2022, using data from Hansen et al. [2013] and methods disclosed therein). Similar rates of loss are also suspected to continue into the future.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Bangladesh	extant	native			yes
Bhutan	extant	vagrant	yes
Cambodia	extant	native	yes
China (mainland)	extant	native	yes
India	extant	native	yes
Malaysia	extant	native	yes
Myanmar	extant	native	yes
Thailand	extant	native	yes
Vietnam	extant	native	yes

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Plantations	suitable	resident
Artificial/Terrestrial	Rural Gardens	marginal	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	300 - 2000 m	Occasional altitudinal limits	0 - 2600 m

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Shifting agriculture	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Wood & pulp plantations - Small-holder plantations	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Unknown		Minority (<50%)		Negligible declines		Unknown
		Stresses Species mortality

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Recommended citation
BirdLife International (2024) Species factsheet: Hill Blue Flycatcher Cyornis whitei. Downloaded from https://datazone.birdlife.org/species/factsheet/hill-blue-flycatcher-cyornis-whitei on 04/12/2024.
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 04/12/2024.