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

Taxonomic note
Laterallus rogersi (Handbook of the Birds of the World and BirdLife International 2020) was previously in the genus Atlantisia (del Hoyo and Collar 2014). Stervander et al. (2019) found that this species, Dot-winged Crake Porzana spiloptera and Yellow-breasted Crake Hapalocrex flaviventer nest within a clade of Laterallus crakes, with the first two grouped closely with Black Rail Laterallus jamaicensis. It thus appears appropriate to move all three species to the genus Laterallus, and this option is adopted by BirdLife.

Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2020. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 5. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v5_Dec20.zip.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	D2

Red List history

Year	Category	Criteria
2021	Vulnerable	D2
2016	Vulnerable	D2
2012	Vulnerable	D2
2008	Vulnerable	D2
2004	Vulnerable
2000	Vulnerable
1996	Vulnerable
1994	Vulnerable
1988	Threatened

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)	19 km2	medium
Number of locations	1	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	5460-7320,6180 mature individuals	good	estimated	2018
Population trend	stable	medium	suspected	-
Generation length	3.5 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: Dilley et al. (2020) estimated the total population to be 9,100 - 12,200 individuals, roughly equivalent to 5,460 - 7,320 mature individuals. This is higher than the total population estimate of 8,400 birds by Fraser et al. (1992). However, this new estimate is not suitable to infer population trends due to the crudeness of some historic estimates (Dilley et al. 2020).

Trend justification: The population is suspected to be stable (Dilley et al. 2020).

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
St Helena (to UK)	extant	native	yes

Country/Territory	IBA Name
St Helena (to UK)	Inaccessible Island

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Grassland	Subantarctic	major	resident
Shrubland	Subantarctic	major	resident
Altitude	0 - 500 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Rattus rattus	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Rapid Declines		Medium Impact: 6
		Stresses Reduced reproductive success
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Unspecified species	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Slow, Significant Declines		Low Impact: 5
		Stresses Indirect ecosystem effects, Competition

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Recommended citation
BirdLife International (2024) Species factsheet: Inaccessible Island Rail Laterallus rogersi. Downloaded from https://datazone.birdlife.org/species/factsheet/inaccessible-island-rail-laterallus-rogersi 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.