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

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	Near Threatened	B1b(iii)+2b(iii)
2016	Near Threatened	B1ab(iii);C2a(ii)
2012	Near Threatened	B1ab(iii);C2a(ii)
2008	Near Threatened	B1a+b(iii); C2a(ii)
2004	Near Threatened
2000	Lower Risk/Near Threatened
1996	Vulnerable
1994	Vulnerable
1988	Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	2,300 km2	medium
Area of Occupancy (breeding/resident)	1,000 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	15750-44000 mature individuals	poor	estimated	2023
Population trend	decreasing	-	suspected	2016-2026
Rate of change over the past 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Generation length	2.8 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The species is said to be very local by Allen (2020), but König and Weick (2008) note that locally calling individuals (presumably males) may be spaced by no more than 150 m. The latter is somewhat supported by eBird (2023) data, which suggests that on Mt. Halcon (which comprises a significant part of the species' range) transects of 1 km typically detected multiple individuals. If the description by König and Weick (2008) is representative, a density of up to 90 mature individuals/km² is possible, although is likely to represent the maximum possible density. In total, c.700 km² of forested habitat remains in its range, and suspecting a density of 45-90 mature individuals/km², and an occupancy of 50-70%, the population size is estimated at 15,750-44,000 mature individuals. It is recognised, however, that these figures are based on poor data, and a refinement of this estimate is urgently sought.

Trend justification: The only identified threat for this species is forest loss. Although rates are currently thought to be slow, this species is considered to be dependent on closed-canopy forest (König and Weick 2008, Allen 2020). Remote sensing data indicate that c.3% of forest cover was lost in this species' range between 2012 and 2022 (Global Forest Watch 2023, based on data from Hansen et al. [2013] and methods disclosed therein), which is thought to have had an equivalent impact on the population, placed here at an ongoing rate of 1–9% over ten years. Rates, and the impact, of degradation are unknown, but may be causing additive declines.

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

Country/Territory	IBA Name
Philippines	Iglit - Baco Mountains
Philippines	Mount Halcon
Philippines	Mount Hinunduang

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	900 - 2590 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Shifting agriculture	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		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: Mindoro Scops-owl Otus mindorensis. Downloaded from https://datazone.birdlife.org/species/factsheet/mindoro-scops-owl-otus-mindorensis 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.