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

Taxonomic note

Geokichla dohertyi (del Hoyo and Collar 2016) was previously listed as Zoothera dohertyi.

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	Near Threatened	A2d+3d+4d
2016	Near Threatened	A2d+3d+4d
2012	Near Threatened	A2d+3d+4d
2008	Near Threatened	A2d; A3d; A4d
2004	Near Threatened
2000	Lower Risk/Near Threatened
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	167,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	poor	suspected	2000
Population trend	decreasing	poor	suspected	1998-2008
Rate of change over the past 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Generation length	3 years	-	-	-
Number of subpopulations	2-100	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: Variably common, the species has declined to near (if not total) extinction on Lombok and Sumbawa. The total population is estimated to fall within the band 24,600-47,300 individuals.

Trend justification: The species is assumed to be experiencing a moderately rapid and on-going decline, owing to high trapping pressure for the cage-bird trade and continuing forest loss at lower altitudes within its range.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Indonesia	extant	native		yes
Timor-Leste	extant	native	yes

Country/Territory	IBA Name
Indonesia	Dodo Jaranpusang
Indonesia	Egon Ilimedo
Indonesia	Gapong
Indonesia	Gunung Inerie
Indonesia	Gunung Lewotobi
Indonesia	Gunung Mutis
Indonesia	Gunung Rinjani
Indonesia	Gunung Tambora
Indonesia	Gunung Timau
Indonesia	Ili Wengot
Indonesia	Laiwanggi Wanggameti
Indonesia	Luku Melolo
Indonesia	Manupeu Tanadaru
Indonesia	Mbeliling - Tanjung Kerita Mese
Indonesia	Poronumbu
Indonesia	Ruteng
Indonesia	Tatar Sepang
Indonesia	Todo Repok
Indonesia	Yawila
Timor-Leste	Monte Diatuto
Timor-Leste	Mount Paitchau and Lake Iralalaro

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	suitable	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	400 - 2300 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Species mortality
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation

Purpose	Scale
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: Chestnut-backed Thrush Geokichla dohertyi. Downloaded from https://datazone.birdlife.org/species/factsheet/chestnut-backed-thrush-geokichla-dohertyi 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.