• Summary
• Text account
• Data table and detailed info
• Distribution map
• Climate Change maps
• 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.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2024	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	not a migrant	Forest dependency	high
Land-mass type		Average mass	277 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	4,220,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	2023
Population trend	decreasing	-	suspected	-
Generation length	5.4 years	-	-	-

Population justification: The global population size is not known (Wetlands International 2023). This species is considered to have a high dependency on forest habitat, and tree cover is estimated to have declined by 14.8% within its mapped range over the past three generations (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). The overall population trend is considered to be decreasing over three generations (16.2 years) (Wetlands International 2023).

Trend justification:   .

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Cameroon	extant	native	yes
Central African Republic	extant	native	yes
Congo	extant	native	yes
Congo, The Democratic Republic of the	extant	native	yes
Côte d'Ivoire	extant	native	yes
Equatorial Guinea	extant	native	yes
Gabon	extant	native	yes
Ghana	extant	native	yes
Guinea	extant	native	yes
Liberia	extant	native	yes
Nigeria	extant	native	yes
Sierra Leone	extant	native	yes
Uganda	possibly extinct	native	yes

Country/Territory	IBA Name
Cameroon	Bakossi mountains
Cameroon	Campo Ma'an complex
Cameroon	Dja Faunal Reserve
Cameroon	Korup National Park
Cameroon	Mount Cameroon and Mokoko-Onge
Congo	Dimonika Biosphere Reserve
Congo	Lower Kouilou basin
Congo	Nouabalé-Ndoki National Park complex
Congo	Odzala National Park complex
Congo, The Democratic Republic of the	Forests west of Lake Edward
Congo, The Democratic Republic of the	Itombwe Mountains
Congo, The Democratic Republic of the	Kahuzi-Biega National Park
Congo, The Democratic Republic of the	Lomako - Yekokora
Congo, The Democratic Republic of the	Luki Forest Reserve
Congo, The Democratic Republic of the	Maiko National Park
Congo, The Democratic Republic of the	Ngiri
Congo, The Democratic Republic of the	Okapi Faunal Reserve
Congo, The Democratic Republic of the	Salonga National Park
Côte d'Ivoire	Azagny National Park
Côte d'Ivoire	Parc National de Taï et Réserve de faune du N'Zo
Côte d'Ivoire	Yapo and Mambo Forest Reserves
Gabon	Gamba Protected Areas Complex
Gabon	Ipassa Strict Nature Reserve
Gabon	Lopé Faunal Reserve
Gabon	Minkébé Forest Reserve
Gabon	Ogooué delta and Mandji island
Ghana	Kakum National Park - Assin Attandaso Resource Reserve
Guinea	Monts Nimba (part of Mount Nimba transboundary AZE)
Liberia	Grebo
Liberia	Lofa-Gola-Mano Complex
Liberia	Nimba mountains
Liberia	Wonegizi mountains
Liberia	Zwedru
Nigeria	Cross River National Park (Oban Division)
Nigeria	Omo Forest Reserve
Sierra Leone	Gola Forests
Sierra Leone	Loma Mountains Non-hunting Forest Reserve
Sierra Leone	Tingi Hills Non-hunting Forest Reserve
Sierra Leone	Western Area Peninsula Forest National Park

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Swamp	suitable	resident
Wetlands (inland)	Bogs, Marshes, Swamps, Fens, Peatlands	suitable	resident
Wetlands (inland)	Permanent Rivers/Streams/Creeks (includes waterfalls)	suitable	resident
Altitude	0 - 750 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Whole (>90%)		Negligible declines		Medium Impact: 6
		Stresses Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Grey-throated Rail Canirallus oculeus. Downloaded from https://datazone.birdlife.org/species/factsheet/grey-throated-rail-canirallus-oculeus 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.