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

Taxonomic note

Heteroxenicus stellatus (del Hoyo and Collar 2016) was previously listed as Brachypteryx stellata.

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
2024	Near Threatened	B1b(iii)
2016	Near Threatened	B1ab(iii)
2012	Near Threatened	B1ab(iii)
2008	Near Threatened	B1a+b(iii)
2004	Near Threatened
2000	Lower Risk/Near Threatened
1996	Vulnerable
1994	Vulnerable
1988	Near Threatened

Migratory status	not a migrant	Forest dependency	high
Land-mass type	shelf island	Average mass	32 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	15,400 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	-
Generation length	3.93 years	-	-	-

Population justification: The population size is unknown, but the species is described as uncommon or rare (Dickinson et al. 1991, Allen 2020). Given the area of habitat remaining within the range however, the global population size is unlikely to be especially small.

Trend justification: Although much of this species' range lies above altitudes affected by habitat loss, remote sensing data (Global Forest Watch 2024, using data from Hansen et al. [2013] and methods disclosed therein) indicate that forest loss within the extant and possibly extant range is slow but ongoing (at a rate equivalent to c.3-4% over three generations). Precautionarily therefore, the species is suspected to be declining slowly, tentatively placed in the range 1-9% in three generations.

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

Country/Territory	IBA Name
Philippines	Mount Apo
Philippines	Mount Balatukan
Philippines	Mount Busa-Kiamba
Philippines	Mount Kampalili-Puting Bato
Philippines	Mount Kitanglad

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1000 - 2950 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		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Unknown		Unknown		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Slaty-backed Jungle-flycatcher Vauriella goodfellowi. Downloaded from https://datazone.birdlife.org/species/factsheet/slaty-backed-jungle-flycatcher-vauriella-goodfellowi 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.