Data Zone
Taxonomic note
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.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Near Threatened | A2bc;D2 |
| 2012 | Near Threatened | A2bc;D2 |
| 2008 | Near Threatened | A2b,c; D2 |
| 2004 | Near Threatened | |
| 2000 | Lower Risk/Near Threatened | |
| 1994 | Lower Risk/Near Threatened | |
| 1988 | Threatened |
| Migratory status | not a migrant | Forest dependency | High |
| Land mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 480 | medium |
| Number of locations | - | |
| Fragmentation | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | poor | unknown | 1983 | |
| Population trend | Decreasing | poor | inferred | - |
| Decline (3 years/1 generation past) | - | - | - | |
| Decline (5 years/1 generation past) | - | - | - | |
| Decline (10 years/1 generation past) | - | - | - | |
| Decline (10 years/3 generation future) | 1-19 | - | - | - |
| Decline (10 years/3 generation past and future) | 1-19 | - | - | - |
| Number of subpopulations | - | - | - | |
| Largest subpopulations | 100 | - | - | - |
| Generation length (yrs) | 4.4 | - | - | - |
Population justification: Engbring and Pratt (1985) estimated a population size of 31,623 individuals, which is rounded here to 31,600.
Trend justification: There are no recent data on population trends; however, surveys in 1994 found significantly fewer individuals than in 1983 (Buden 2000), thus a slow to moderate decline is suspected.
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Micronesia, Federated States of | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| Micronesia, Federated States of | Enipein Watershed |
| Micronesia, Federated States of | Pilapen Kepin River Watershed |
| Micronesia, Federated States of | Pohnpei Watershed Forest Reserve |
| Micronesia, Federated States of | Salapwuk |
| Micronesia, Federated States of | Southeast Pohnpei / Nan Madol |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Lowland | suitable | resident |
| Forest | Subtropical/Tropical Moist Montane | major | resident |
| Altitude | 600 - 0 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Agriculture & aquaculture | Annual & perennial non-timber crops | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases | Timing | Scope | Severity | Impact | ||||
| Future | Whole (>90%) | Very Rapid Declines | Medium Impact: 7 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Problematic native species/diseases | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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Recommended citation
BirdLife International (2019) Species factsheet: Rukia longirostra. Downloaded from
http://www.birdlife.org on 22/05/2019.
Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 22/05/2019.
