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

Taxonomic note
Zosterops maderaspatanus , Z. kirki and Z. semiflavus (del Hoyo and Collar 2016) were previously lumped as Z. maderaspatanus following Dowsett & Forbes-Watson (1993) 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
D	D	D1

Red List history

Year	Category	Criteria
2024	Extinct
2016	Extinct
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	unknown
Land-mass type		Average mass	11 g

	Estimate	Data quality
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	0 mature individuals	good	estimated	-
Population trend		-	-	-
Generation length	2.55 years	-	-	-

Population justification: No extant population remains.

Trend justification: Very little is known about this recently described species. The last specimen was taken in 1890 (Ridgley 1896, cf. Lionnet 1984), and it is thought to have become extinct by 1900 (Hume 2017). The main drivers of decline was likely deforestation, competition with introduced birds, and predation by introduced black rats Rattus rattus (Hume 2017).

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Seychelles	extinct	native	yes

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Dry	possible	unknown
Forest	Subtropical/Tropical Mangrove Vegetation Above High Tide Level	possible	unknown
Forest	Subtropical/Tropical Moist Lowland	possible	unknown
Forest	Subtropical/Tropical Moist Montane	possible	unset
Altitude	0 - 130 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
		Past, Unlikely to Return		Unknown		Unknown		Past Impact
		Stresses Ecosystem degradation, Ecosystem conversion
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Rattus rattus	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Whole (>90%)		Unknown		Past Impact
		Stresses Species disturbance, Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Unspecified species	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Unknown		Unknown		Past Impact
		Stresses Competition

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Recommended citation
BirdLife International (2024) Species factsheet: Marianne White-eye Zosterops semiflavus. Downloaded from https://datazone.birdlife.org/species/factsheet/marianne-white-eye-zosterops-semiflavus 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.