• 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., 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	Near Threatened	A3c+4c; B1b(ii,iii)
2016	Data Deficient
2012	Data Deficient
2008	Data Deficient
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	6 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	4,900 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	2016-2026
Rate of change over the past 10 years/3 generations (longer of the two periods)	5-15%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	15-25,20-25%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	15-25,20-25%	-	-	-
Generation length	2.17 years	-	-	-
Number of subpopulations	1-3	-	-	-

Population justification: The global population size of this species has not been quantified, although it is described as 'rare and local' (Allen 2020). Its size and canopy-dwelling habits mean it probably has a low detectability. Of eight lowland forest sites surveyed on Samar 2002-2003, M. leytensis was observed at five of them (J.-C. Gonzalez in litt. 2021); however more recent sightings in Samar Island Natural Park and the surrounding area indicate that it may be highly localised, being absent from large areas of apparently suitable habitat (R. Hutchinson in litt. 2021).

Trend justification: This species appears to be dependant on lowland old growth forest in an area of the Philippines that is increasingly encroached upon by land clearance for agriculture and timber extraction. Given ongoing and potentially accelerating rates of lowland forest loss, degradation and fragmentation in its range, that is projected to decline at a rate equivalent to c.18% over the next decade (Global Forest Watch [2021] using data from Hansen et al. [2013] and methods disclosed therein), M. leytensis is suspected to undergo a decline of 20-25% between 2016-2025 and over the next 10 years.

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

Country/Territory	IBA Name
Philippines	Anonang-Lobi Range
Philippines	Biliran and Maripipi Island
Philippines	Mount Yacgun - Mount Sohoton complex

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Altitude	0 - 500 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Visayan Miniature Babbler Micromacronus leytensis. Downloaded from https://datazone.birdlife.org/species/factsheet/visayan-miniature-babbler-micromacronus-leytensis on 19/12/2024.
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 19/12/2024.