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.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
D | D | D1 |
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 | ||||||
|
|||||||||
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 | ||||||
|
|||||||||
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 | ||||||
|
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 12/12/2024.
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 12/12/2024.