Taxonomic note
Akialoa ellisiana, A. stejnegeri and A. lanaiensis (del Hoyo and Collar 2016) were previously placed in the genus Hemignathus and lumped as H. ellisianus following AOU (1998 and supplements).
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 |
---|---|---|
- | - | - |
Year | Category | Criteria |
---|---|---|
2016 | Extinct |
Migratory status | not a migrant | Forest dependency | unset |
Land mass type | Average mass | - |
Estimate | Data quality | |
---|---|---|
Number of locations | - | |
Severely Fragmented | - |
Value | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
No. of mature individuals | 0 | |||
Population trend | not applicable | - | ||
Decline (3 years/1 generation past) | - | - | - | |
Decline (5 years/1 generation past) | - | - | - | |
Decline (10 years/1 generation past) | - | - | - | |
Decline (10 years/3 generation future) | - | - | - | |
Decline (10 years/3 generation past and future) | - | - | - | |
Number of subpopulations | - | - | - | |
Percentage in largest subpopulation | - | - | - | |
Generation length (yrs) | 5.5 | - | - | - |
Population justification: No extant population remains.
Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
---|---|---|---|---|---|---|
USA | N | Extinct | 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 |
Altitude | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Past, Unlikely to Return | Majority (50-90%) | Rapid Declines | Past Impact | ||||||
|
|||||||||
Climate change & severe weather | Storms & flooding | Timing | Scope | Severity | Impact | ||||
Past, Unlikely to Return | 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 | Whole (>90%) | Slow, Significant Declines | 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 | Whole (>90%) | Rapid Declines | Past Impact | ||||||
|
Recommended citation
BirdLife International (2022) Species factsheet: Akialoa ellisiana. Downloaded from
http://www.birdlife.org on 14/08/2022.
Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 14/08/2022.