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

Taxonomic note

Edolisoma tenuirostre, E. insperatum, E. nesiotis, E. monacha, E. rostratum, E. meyerii, E. obiense, E. grayi, E. remotum and E. salomonis (del Hoyo and Collar 2016) were previously lumped as Coracina tenuirostris following Christidis & Boles (2008) and Sibley & Monroe (1990, 1993).

 

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
-	C2a(ii)	B1ab(ii,iii,v)+2ab(ii,iii,v); C2a(ii)

Red List history

Year	Category	Criteria
2021	Endangered	C2a(ii)
2016	Endangered	C2a(ii)
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Migratory status	not a migrant	Forest dependency	medium
Land-mass type		Average mass	59 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	1,700 km2
Area of Occupancy (breeding/resident)	576 km2
Number of locations	6-10	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	1000-2499 mature individuals	poor	estimated	2016
Population trend	decreasing	-	inferred	-
Generation length	4.1 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The global population size was estimated at 2,060 birds in 1983 (Engbring et al. 1990), but since that time a large proportion of native forest has been lost from the island. Surveys in 2012 only recorded the species eight times from 247 widely distributed survey stations (Oleiro and Kesler unpubl. report), and generally reported decreases in forest associated species. It is therefore estimated that the population is no higher than 2,060 individuals, or 1,373 mature individuals. The population is therefore placed in the band 1,000-2,499 mature individuals.

Trend justification: This species is inferred to be declining owing to ongoing forest loss and degradation from agricultural expansion and development (Oleiro and Kesler 2015). The likely rate of this decline has not been quantified.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Micronesia, Federated States of	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	major	resident
Marine Intertidal	Mangrove Submerged Roots	suitable	resident
Altitude	0 - 800 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
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
Natural system modifications	Dams & water management/use - Dams (size unknown)	Timing		Scope		Severity		Impact
		Future		Minority (<50%)		Unknown		Unknown
		Stresses Ecosystem conversion
Residential & commercial development	Tourism & recreation areas	Timing		Scope		Severity		Impact
		Future		Minority (<50%)		Unknown		Unknown
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Pohnpei Cicadabird Edolisoma insperatum. Downloaded from https://datazone.birdlife.org/species/factsheet/pohnpei-cicadabird-edolisoma-insperatum on 22/12/2024.
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 22/12/2024.