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

Taxonomic note
Hypotaenidia rovianae (del Hoyo and Collar 2014) was previously placed in the genus Gallirallus.

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
2023	Least Concern
2016	Near Threatened	C1+2a(i)
2012	Near Threatened	C1+2a(i)
2008	Near Threatened	C1; C2a(i)
2006	Near Threatened
2004	Near Threatened
2000	Lower Risk/Near Threatened
1994	Lower Risk/Near Threatened
1988	Lower Risk/Least Concern

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	6,800 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	poor	suspected	-
Generation length	4.77 years	-	-	-
Number of subpopulations	5	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The population was suspected to number 2,500-9,999 mature individuals previously (G. Dutson in litt. 2002), although this requires survey confirmation and the population size is here considered unknown. However, it is described as localised and rare, except on Kolombangara where it is locally fairly common (Dutson 2011).

Trend justification: While there is ongoing forest loss in its range (equivalent to c.12-15% over three generations [Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein]), this species favours early successional habitats (Taylor 2020) and may benefit from forest loss. It has presumably increased in the past to populate large forestry plantations (G. Dutson pers. obs. 1997, M. Iles verbally 1998). Consequently, there is no reason to suspect declines in response to forest loss. Overall, the population is suspected to be stable, though it may in fact even be increasing.

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

Country/Territory	IBA Name
Solomon Islands	Kolombangara Upland Forest

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Plantations	suitable	resident
Forest	Subtropical/Tropical Moist Lowland	suitable	resident
Shrubland	Subtropical/Tropical Moist	suitable	resident
Altitude	0 - 600 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 - Canis familiaris	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		No decline		Low Impact: 4
		Stresses Species mortality

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Recommended citation
BirdLife International (2024) Species factsheet: Roviana Rail Hypotaenidia rovianae. Downloaded from https://datazone.birdlife.org/species/factsheet/roviana-rail-hypotaenidia-rovianae 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.