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

Taxonomic note

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

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
-	-	A2cd+3cd+4cd

Red List history

Year	Category	Criteria
2021	Vulnerable	A2cd+3cd+4cd
2016	Vulnerable	A2cd+3cd+4cd
2012	Vulnerable	A2cd+3cd+4cd
2008	Vulnerable	A2c,d; A3c,d; A4c,d
2004	Vulnerable
2000	Vulnerable
1996	Vulnerable
1994	Vulnerable
1988	Near Threatened

Migratory status	not a migrant	Forest dependency	medium
Land-mass type	shelf island	Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	233,000 km2	medium
Number of locations	11-100	-
Severely fragmented?	yes	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	6000-15000 mature individuals	poor	suspected	2000
Population trend	decreasing	poor	inferred	2015-2025
Rate of change over the past 10 years/3 generations (longer of the two periods)	30-49%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	30-49%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	30-49%	-	-	-
Generation length	3.6 years	-	-	-
Number of subpopulations	2-100	-	-	-

Population justification: The population size is preliminarily suspected to fall into the band 10,000-19,999 individuals. This equates to 6,667-13,333 mature individuals, rounded here to 6,000-15,000 mature individuals.

Trend justification: A rapid population decline is suspected to be occurring as a result of continuing habitat clearance throughout the species's range. However, given the species's apparent tolerance of secondary habitats, declines may be less drastic than currently thought.

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

Country/Territory	IBA Name
Philippines	Angat watershed
Philippines	Central Sierra Madre mountains
Philippines	Lake Naujan
Philippines	Mount Halcon
Philippines	Mount Hinunduang
Philippines	Mount Makiling
Philippines	Mounts Banahaw-San Cristobal National Park
Philippines	Mounts Irid-Angilo and Binuang
Philippines	Mounts Palay-Palay-Mataas Na Gulod National Park
Philippines	Northern Sierra Madre Natural Park
Philippines	Puerto Galera
Philippines	Quezon National Park

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	suitable	resident
Artificial/Terrestrial	Urban Areas	marginal	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	90 - 1050 m	Occasional altitudinal limits	(max) 1560 m

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 Reduced reproductive success, Species mortality
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Rapid Declines		Medium Impact: 7
		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, national
Pets/display animals, horticulture	subsistence, national

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Recommended citation
BirdLife International (2024) Species factsheet: Ashy Thrush Geokichla cinerea. Downloaded from https://datazone.birdlife.org/species/factsheet/ashy-thrush-geokichla-cinerea on 22/11/2024.
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 22/11/2024.