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

Taxonomic note

Vauriella insignis (del Hoyo and Collar 2016) was previously listed as Rhinomyias insignis.

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	Least Concern
2016	Vulnerable	A2c+3c+4c;B1ab(i,ii,iii,iv,v);C2a(i)
2012	Vulnerable	A2c+3c+4c;B1ab(i,ii,iii,iv,v);C2a(i)
2008	Vulnerable	A2c; A3c; A4c; B1a+b(i,ii,iii,iv,v); C2a(i)
2004	Vulnerable
2000	Vulnerable
1996	Endangered
1994	Endangered
1988	Near Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	23,900 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	poor	suspected	-
Generation length	3.9 years	-	-	-

Population justification: This species is described as rare and local (Dickinson et al. 1991, Poulsen 1995, Allen 2020), and the global population size has not been quantified. It is generally shy, quiet and difficult to observe (Poulsen 1995, L. Heaney in litt. 2019), but trapping studies have revealed it to be common at Balbalan-Balbalasang National Park, Kalinga Province, on Mt. Amuyao, Mountain Province, and Mt. Sicapoo, Apayao Province (L. Heaney in litt. 2007, 2019). It may have been previously under-recorded owing to its furtive nature and could prove to be more widespread, however trapping studies at various montane sites outside the Cordillera Central and Sierra Madre between 2000 and 2007 failed to find it (L. Heaney in litt. 2007). It has probably never been numerous (Poulsen 1995), though given the area of habitat remaining within the range the global population size is unlikely to be especially small.

Trend justification: This species may be affected locally by deforestation and degradation particularly in the southern third of the Central Cordillera due to logging, urbanisation and expansion of agriculture (L. Heaney in litt. 2019). However, the central and northern portions of the range have been less impacted, with some formerly logged and farmed areas beginning to regenerate (L. Heaney, pers. obs, 2010-2019). As a result, the amount of forest in the Cordillera may have stabilised or even be increasing overall (L. Heaney in litt. 2019). Remote sensing data also indicate that forest loss has been minimal (<1%) within the past three generations (Global Forest Watch 2024, using data from Hansen et al. [2013] and methods disclosed therein). Additionally, the species may not be strictly dependent on old growth forest; it has also been recorded in forest with little undergrowth as well as in second growth adjacent to oak-dominated primary forest (Poulsen 1995, Allen 2020). In the absence of evidence for any declines or substantial threats therefore, the population trend is suspected to be stable overall.

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

Country/Territory	IBA Name
Philippines	Mount Pulag National Park
Philippines	Northern Sierra Madre Natural Park

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	950 - 2950 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%)		No decline		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		No decline		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		No decline		Low Impact: 4
		Stresses Ecosystem degradation
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		No decline		Low Impact: 4
		Stresses Ecosystem degradation
Residential & commercial development	Housing & urban areas	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		No decline		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: White-browed Jungle-flycatcher Vauriella insignis. Downloaded from https://datazone.birdlife.org/species/factsheet/white-browed-jungle-flycatcher-vauriella-insignis 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.