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

Taxonomic note

Rhabdornis inornatus and R. rabori (del Hoyo and Collar 2016) were previously lumped as R. inornatus following Sibley & Monroe (1990, 1993).

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
-	-	-

Red List history

Year	Category	Criteria
2022	Least Concern
2016	Vulnerable	C2a(i)
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	24,000 km2	medium
Area of Occupancy (breeding/resident)	3,000 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	-	suspected	-
Generation length	2.95 years	-	-	-
Number of subpopulations	2-50	-	-	-

Population justification: There is approximately 1,650 km² of forest cover at suitable elevations for the species (Global Forest Watch [2021], using data from Hansen et al. [2013] and methods disclosed therein). Although no density data exist for R. rabori, a congener (R. mystacilis) has been estimated to occur at densities of 75 birds/km² (Evans et al. 1991); consequently, it is considered highly unlikely, even accounting for this species' apparent comparative scarcity, that the population falls below 10,000 mature individuals.

Trend justification: The population was previously inferred to be in decline because of forest loss and fragmentation. While this species has undoubtedly lost habitat in its range in the past (especially on Negros, where almost all forest below 1,000 m was cleared by the 20th century), recent remote sensing data (Global Forest Watch [2021], using data from Hansen et al. [2013] and methods disclosed therein) indicate that over the last 10 years, forest loss in this species' range has been c.0.5-1.0%, which is too slow to infer a continuing decline, especially considering its apparent tolerance of small-scale degradation. In the absence of any other identified threats to the species, the population is therefore suspected to be stable.

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

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	800 - 1800 m	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		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Annual & perennial non-timber crops - Shifting agriculture	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Visayan Rhabdornis Rhabdornis rabori. Downloaded from https://datazone.birdlife.org/species/factsheet/visayan-rhabdornis-rhabdornis-rabori on 30/11/2024.
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 30/11/2024.