• 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.
Rocamora, G.J. and Yeatman-Berthelot, D. 2009. Family Dicruridae (Drongos). In: J. del Hoyo, A. Elliot, A. and D.A. Chistie (eds), Handbook of the Birds of the World. Vol. 14. Bush-shrikes to Old World Sparrows, pp. 172-226. Lynx Edicions, Barcelona, Spain.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	B1ab(iii)+2ab(iii)	B1ab(iii)+2ab(iii); D1

Red List history

Year	Category	Criteria
2024	Endangered	B1ab(iii)+2ab(iii)
2016	Endangered	B1ab(ii,iii,v);D
2012	Endangered	B1ab(ii,iii,v);D
2011	Endangered	B1a+b(ii,iii)
2008	Not Recognised
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	-

	Estimate	Data quality
Area of Occupancy (breeding/resident)	140 km2	poor
Number of locations	2-5	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	400-1000 mature individuals	poor	estimated	2024
Population trend	decreasing	poor	suspected	-
Generation length	3.18 years	-	-	-
Number of subpopulations	1-5,1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification:

The population is estimated at 600-1,100 individuals, and 400-1,000 mature individuals (breeding adults). This estimate is calculated from surveys for D. menagei targeting five sites on the edges of the Calatrava, San Andres, San Agustin Watersheds Forest Reserve (CSASAWFR) in May 2017 (Sarenas and Meren 2017). This survey found a density of D. menagei of 8 birds/km² (Sarenas and Meren 2017). The density was extrapolated to a minimum area of suitable habitat of 75 km² and a maximum of 140 km² (sRedList [2023] using data from ESA [2022]). This method gave (rounded) population estimates of 600-1,100, most of which (400-1,000) were assumed to be breeding adults given the species' short generation length).

Trend justification: Currently, there has only been a single survey for the species which provides sufficient data to estimate a population size (Sarenas and Meren 2017). Therefore, it is not possible to obtain a reliable quantitative trend for the population over time. However, the species is precautionarily suspected to be declining due to localised deforestation, illegal logging, and expanding agricultural activity (Rocamora and Yeatman-Berthelot 2020). Large areas of suitable habitat have already been converted to pasture and coconut plantations (Allen 2006) and, given the species' likely intolerance to open habitats (Sarenas and Meren 2017), it is likely even moderate continuations of loss and degradation are still causing a decline in mature individuals. Although there has been only a modest 2.4% recent decline in overall forest cover between 2012 and 2022 (Global Forest Watch 2024, based on data from Hansen et al. [2013] and methods disclosed therein), the continued degradation of forest on Tablas is likely to result in a decline of suitable habitat for the species even if overall forest loss is minimal.

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

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Altitude	1 - 665 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
Agriculture & aquaculture	Livestock farming & ranching - Small-holder grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Wood & pulp plantations - Small-holder plantations	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: Tablas Drongo Dicrurus menagei. Downloaded from https://datazone.birdlife.org/species/factsheet/tablas-drongo-dicrurus-menagei on 27/11/2024.
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 27/11/2024.