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

Taxonomic note

Zosterornis hypogrammicus (del Hoyo and Collar 2016) was previously listed as Stachyris hypogrammica.

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	Near Threatened	B1ab(iii)
2013	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	Lower Risk/Least Concern

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	1,100 km2	medium
Area of Occupancy (breeding/resident)	450 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	poor	suspected	-
Generation length	2.8 years	-	-	-
Number of subpopulations	1-5	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The global population size has not been quantified, but the species is described as common (del Hoyo et al. 2007, Allen 2020). It occurs on Mt Victoria, Mt Mataling, Mt Borangbato, Mt Mantalingajan (at the peak) and at Magtaguimbong which may function as individual subpopulations; however, the species is monotypic and individuals may therefore occasionally disperse between mountains but this requires genetic confirmation.

Trend justification: Forest cover loss in this species's range is minimal (1.0-1.5% over ten years; Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein) and is not believed to be occurring at a rate greater than that of natural variation. In the absence of any additional threats, 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
Philippines	Mount Mantalingahan
Philippines	Victoria and Anepahan Ranges

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1000 - 2030 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Palawan Striped Babbler Zosterornis hypogrammicus. Downloaded from https://datazone.birdlife.org/species/factsheet/palawan-striped-babbler-zosterornis-hypogrammicus 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.