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

Taxonomic source(s)
Cramp, S. and Simmons, K.E.L. (eds). 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.
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
2018	Least Concern
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

Migratory status	full migrant	Forest dependency	Does not normally occur in forest
Land mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	7,990,000
Extent of Occurrence non-breeding (km2)	11,400,000
Number of locations		-
Fragmentation		-

	Estimate	Data quality	Derivation	Year of estimate
No. of mature individuals		poor	estimated	2009
Population trend	Stable		suspected	-
Decline (3 years/1 generation past)		-	-	-
Decline (5 years/1 generation past)		-	-	-
Decline (10 years/1 generation past)		-	-	-
Decline (10 years/3 generation future)		-	-	-
Decline (10 years/3 generation past and future)		-	-	-
Number of subpopulations		-	-	-
Largest subpopulations		-	-	-
Generation length (yrs)	9.3	-	-	-

Population justification: The global population is estimated to number > c.10,000 individuals (Ferguson-Lees et al. 2001), while national population sizes have been estimated at c.100-10,000 breeding pairs, c.50-1,000 individuals on migration and < c.50 wintering individuals in China and < c.50 individuals on migration and < c.50 wintering individuals in Korea (Brazil 2009).

Trend justification: The population is suspected to be fluctuating owing to fluctuations in vole populations (Ferguson-Lees and Christie 2001).

Country/Territory	Occurrence status	Presence	Resident	Breeding	Non-breeding	Passage
Bhutan	N	Extant
China (mainland)	N	Extant		Yes
Hong Kong (China)	V	Extant
India	N	Extant		Yes
Japan	V	Extant
Kazakhstan	N	Extant
Kyrgyzstan	N	Extant			Yes
Mongolia	N	Extant		Yes
Nepal	N	Extant
North Korea	N	Extant
Russia	N	Extant		Yes
Russia (Asian)	N	Extant		Yes
Russia (Central Asian)	N	Extant		Yes
South Korea	N	Extant
Tajikistan	N	Extant
Uzbekistan	V	Extant

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Arable Land	suitable	non-breeding
Desert	Temperate	suitable	breeding
Grassland	Temperate	suitable	non-breeding
Grassland	Temperate	suitable	breeding
Rocky areas		suitable	breeding
Altitude	0 - 5000 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Livestock farming & ranching - Small-holder grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation
Pollution	Garbage & solid waste	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Species mortality

Purpose	Primary form used	Life stage used	Source	Scale	Level	Timing
Pets	Whole	Adults and juveniles	Wild	International	Non-trivial	Recent
Pets/display animals, horticulture	-	-	-	International	Non-trivial	Recent
Pets/display animals, horticulture	-	-		International	Non-trivial	Recent

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Recommended citation
BirdLife International (2018) Species factsheet: Buteo hemilasius. Downloaded from http://www.birdlife.org on 18/12/2018. Recommended citation for factsheets for more than one species: BirdLife International (2018) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 18/12/2018.