• 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., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and 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	medium
Land-mass type		Average mass	67 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	2,170,000 km2
Extent of Occurrence (non-breeding)	1,560,000 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	unknown	-	-	-
Generation length	6.1 years	-	-	-

Population justification: The global population size has not been quantified, but the species is described as common during the breeding season in Russia and China, rare in North Korea, uncommon and local in South Korea, common to abundant in Hong Kong outside of the breeding season and uncommon to fairly common in Vietnam outside the breeding season (del Hoyo et al. 2005). National population estimates include: c.10,000-100,000 breeding pairs and c.50-10,000 individuals on migration in China; c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in Korea and c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in Russia (Brazil 2009).

Trend justification: The population trend is difficult to determine because of uncertainty over the impacts of habitat modification on population sizes.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
China (mainland)	extant	native
Hong Kong (China)	extant	native
Japan	extant	vagrant
Macao (China)	extant	native
North Korea	extant	native		yes
Russia	extant	native
Russia (Asian)	extant	native
South Korea	extant	native
Taiwan, China	extant	vagrant
Vietnam	extant	native

Country/Territory	IBA Name
Russia (Asian)	Arkhara lowlands
Russia (Asian)	Bolon' lake
Russia (Asian)	Evoron-Chukchagirskoye depression
Russia (Asian)	Kievka and Chernaya river basins
Russia (Asian)	Middle reaches of the Iman river
Russia (Asian)	Udyl' lake

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	non-breeding
Forest	Temperate	major	breeding
Shrubland	Subtropical/Tropical Moist	suitable	non-breeding
Shrubland	Temperate	suitable	breeding
Altitude	0 - 1100 m	Occasional altitudinal limits

Purpose	Scale
Food - human	subsistence, national
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: Grey-backed Thrush Turdus hortulorum. Downloaded from https://datazone.birdlife.org/species/factsheet/grey-backed-thrush-turdus-hortulorum on 23/11/2024.
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 23/11/2024.