• 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
B1ab(i,ii,iii,v); C2a(i,ii); D	B1ab(i,ii,iii,v)+2ab(i,ii,iii,v); C2a(i,ii); D	B1ab(i,ii,iii,v)+2ab(i,ii,iii,v); C2a(i,ii); D1+2

Red List history

Year	Category	Criteria
2018	Critically Endangered	B1ab(i,ii,iii,v); C2a(i,ii); D
2016	Critically Endangered	B1ab(ii,iii,v)+2ab(ii,iii,v); C2a(i,ii); D
2015	Critically Endangered	B1ab(ii,iii,v)+2ab(ii,iii,v); C2a(i,ii); D
2013	Critically Endangered	B1ab(ii,iii,v)+2ab(ii,iii,v); C2a(i,ii); D
2012	Critically Endangered	B1ab(ii,iii,v)+2ab(ii,iii,v);C2a(i,ii);D
2010	Critically Endangered	B1a+b(ii,iii,v); B2a+b(ii,iii,v); C2a(ii); D1
2009	Critically Endangered	B1a+b(ii,iii,v); B2a+b(ii,iii,v); C2a(ii); D1
2008	Critically Endangered
2004	Critically Endangered
2000	Critically Endangered
1996	Critically Endangered
1994	Critically Endangered
1988	Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	16 km2	medium
Number of locations	1	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	21-100 mature individuals	medium	estimated	2016
Population trend	decreasing	poor	suspected	-
Generation length	4.2 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The population is estimated to number 34-150 individuals (Fauzan and Bashari 2016), roughly equating to 21-100 mature individuals. This total is similar to those reported from 2001 (19 to 135 birds [Riley and Wardill 2001]); 2003, 2005 and 2006 (<215 birds [BirdLife Indonesia 2007); and 2009 (30-106 [Burung Indonesia 2009]). Each survey has visited a greater number of potential sites and added new locations, but has not managed to increase the total estimate.

Trend justification: Within the Sahendaruman crater, small-scale habitat loss continues in some valleys inhabited by the species (Martin 2018). Small-scale clearance (plots of c.0.3 ha that may or may not have been previously cleared) was recorded in most valleys surveyed below or adjacent to territories of the Cerulean Paradise-flycatcher (Martin 2018). At two valleys near Malamenggu village, clearance and selective logging occurred between surveys in November 2014 and in May 2015 (Martin 2018). In these valleys, three individuals were present during the first survey (Fauzan and Bashari 2016), but none were found in 2015 (Martin 2018). Consequently, the species is believed to be suffering from a continuing decline, certainly in the area of suitable habitat and likely also in numbers of mature individuals.

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

Country/Territory	IBA Name
Indonesia	Gunung Awu
Indonesia	Gunung Sahendaruman

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Altitude	425 - 650 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Scale Unknown/Unrecorded	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Annual & perennial non-timber crops - Shifting agriculture	Timing		Scope		Severity		Impact
		Ongoing		Whole (>90%)		Slow, Significant Declines		Medium Impact: 7
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Wood & pulp plantations - Scale Unknown/Unrecorded	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Rapid Declines		Medium Impact: 7
		Stresses Species disturbance, Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation

Purpose	Scale
Pets/display animals, horticulture	subsistence, national

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Recommended citation
BirdLife International (2024) Species factsheet: Cerulean Flycatcher Eutrichomyias rowleyi. Downloaded from https://datazone.birdlife.org/species/factsheet/cerulean-flycatcher-eutrichomyias-rowleyi 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.