• 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
2017	Near Threatened	B1ab(v)+2ab(v)
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	69,600 km2
Area of Occupancy (breeding/resident)	1,100 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	-
Generation length	6.6 years	-	-	-

Population justification: The global population size has not been quantified, but the species is reported to be extinct in some localities, common in others and extinct on several small islands (del Hoyo et al. 1997). The population on Mayotte has been estimated at 9,800 individuals (Rocamora 2004).

Trend justification: There appears to be no evidence of a decline in the species between 1985 and 1989 on the Comoros (Stevens et al. 1992). However, hunting does continue to be a threat to the species and so the population is tentatively suspected to be in decline owing to unsustainable levels of exploitation.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Comoros	extant	native	yes
Mayotte (to France)	extant	native	yes
Seychelles	extant	native	yes

Country/Territory	IBA Name
Comoros	Karthala Mountains
Comoros	La Grille Mountains
Comoros	Mont Mlédjélé (Mwali highlands)
Comoros	Ndzuani highlands
Mayotte (to France)	Crêtes du Nord Forest Reserve
Mayotte (to France)	Crêtes du Sud Forest Reserve
Mayotte (to France)	Mlima Combani and Mlima Mtsapéré
Mayotte (to France)	Mount Bénara Forest Reserve
Seychelles	Aldabra Special Reserve

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Mangrove Vegetation Above High Tide Level	suitable	resident
Forest	Subtropical/Tropical Moist Lowland	suitable	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Altitude	0 - 1800 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%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Species mortality
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

Purpose	Scale
Food - human	subsistence, national

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Recommended citation
BirdLife International (2024) Species factsheet: Comoro Blue-pigeon Alectroenas sganzini. Downloaded from https://datazone.birdlife.org/species/factsheet/comoro-blue-pigeon-alectroenas-sganzini on 27/12/2024.
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 27/12/2024.