• 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. 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.
Lambert, F. R. 1998. A new species of Gymnocrex from the Talaud Islands, Indonesia. Forktail 13: 1-6.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	B1ab(ii,iii,iv,v); C2a(ii)	B1ab(ii,iii,iv,v); C2a(i,ii); D1+2

Red List history

Year	Category	Criteria
2016	Endangered	B1ab(ii,iii,iv,v);C2a(ii)
2012	Endangered	B1ab(ii,iii,iv,v);C2a(ii)
2008	Endangered	B1a+b(ii,iii,iv,v); C2a(ii)
2004	Endangered
2000	Endangered
1994	Not Recognised
1988	Not Recognised

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	1,200 km2	medium
Number of locations	2-5	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	600-1700 mature individuals	poor	estimated	2000
Population trend	decreasing	poor	suspected	-
Generation length	3.7 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: A population estimate of 1,000-2,499 individuals has been interpreted from information provided by F. R. Lambert (in litt. 2000), who cautioned that it would be best to assume that its total numbers are low. The subsequent lack of records despite survey work appears to confirm this suspicion. The estimate equates to 667-1,666 mature individuals, rounded here to 600-1,700 mature individuals.

Trend justification: A lack of records hinders evaluation of this species's population trend. However, localised habitat conversion, hunting and possibly rat predation are suspected to be causing an unquantified decline.

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

Country/Territory	IBA Name
Indonesia	Karakelang Utara

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Wetlands (inland)	Bogs, Marshes, Swamps, Fens, Peatlands	major	resident
Wetlands (inland)	Permanent Rivers/Streams/Creeks (includes waterfalls)	suitable	resident
Altitude		Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Agro-industry farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Annual & perennial non-timber crops - Scale Unknown/Unrecorded	Timing		Scope		Severity		Impact
		Ongoing		Whole (>90%)		Slow, Significant Declines		Medium Impact: 7
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Whole (>90%)		Slow, Significant Declines		Medium Impact: 7
		Stresses Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Named species	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Unknown		Unknown
		Stresses Reduced reproductive success

Purpose	Scale
Food - human	subsistence, national

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Recommended citation
BirdLife International (2024) Species factsheet: Talaud Rail Gymnocrex talaudensis. Downloaded from https://datazone.birdlife.org/species/factsheet/talaud-rail-gymnocrex-talaudensis 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.