IUCN Red List Criteria
| Critically Endangered |
A3e+4e |
| Endangered |
A3e+4e;B1ab(iii,v) |
| Vulnerable |
A3e+4e;B1ab(iii,v);D2 |
IUCN Red List history
| Year |
Category |
| 2012 |
Critically Endangered |
| 2010 |
Critically Endangered |
| 2009 |
Critically Endangered |
| 2008 |
Critically Endangered |
| 2004 |
Critically Endangered |
| 2000 |
Vulnerable |
| 1996 |
Vulnerable |
| 1994 |
Vulnerable |
| 1988 |
Lower Risk/Least Concern |
Species attributes
| Migratory status |
not a migrant |
Forest dependency |
Medium |
| Land mass type |
|
Average mass |
20.2 g
|
Distribution
| |
Estimate |
Data quality |
| Extent of Occurrence breeding/resident (km2) |
130 |
medium |
| Number of locations |
2 |
- |
| Fragmentation |
|
- |
Population & trend
| |
Estimate |
Data quality |
Derivation |
Year of estimate |
| No. of mature individuals |
|
good |
Estimated |
1982 |
| Population trend |
Decreasing |
poor |
|
- |
| Number of subpopulations |
2 |
- |
- |
- |
| Largest subpopulation |
71997 |
- |
- |
- |
| Generation length (yrs) |
4.4 |
- |
- |
- |
|
Population justification: The species occurs on Saipan (71,997 individuals) and Aguijan (1,169 individuals) (Camp et al. 2009, Amidon et al. in prep.), equating to a global population of c.73,000 individuals. |
|
Trend justification: An extremely rapid population decline, which may well have already begun, is projected over the next ten years owing to the possible establishment of the brown tree snake Boiga irregularis on Saipan. |
Country/Territory distribution
| Country/Territory |
Occurrence status |
Extinct |
Breeding |
Non-breeding |
Passage |
| Northern Mariana Islands (to USA) |
Native |
No |
Yes |
|
|
Habitats & altitude
| Habitat (level 1) |
Habitat (level 2) |
Importance |
Occurrence |
| Artificial/Terrestrial |
Urban Areas |
suitable |
resident |
| Forest |
Subtropical/Tropical Moist Lowland |
major |
resident |
| Shrubland |
Subtropical/Tropical Moist |
suitable |
resident |
|
Altitude
|
0 - 0 m
|
Occasional altitudinal limits
|
|
Threats & impact
| Threat (level 1) |
Threat (level 2) |
Impact and Stresses |
| Residential & commercial development |
Housing & urban areas |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
Unknown |
Unknown |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Agriculture & Aquaculture |
Annual & perennial non-timber crops / Small-holder farming |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Unknown |
Unknown |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Invasive non-native/alien species/diseases |
Problematic native species/diseases / Brown Tree Snake (Boiga irregularis) |
Timing |
Scope |
Severity |
Impact |
| Future |
Majority (50-90%) |
Very Rapid Declines |
Medium Impact: |
| Stresses |
|---|
| Species mortality |
|
| Climate change & severe weather |
Habitat shifting & alteration |
Timing |
Scope |
Severity |
Impact |
| Future |
Whole (>90%) |
Unknown |
Unknown |
| Stresses |
|---|
| Indirect ecosystem effects, Ecosystem degradation, Ecosystem conversion |
|
| Climate change & severe weather |
Storms & flooding |
Timing |
Scope |
Severity |
Impact |
| Past, Likely to Return |
Majority (50-90%) |
No decline |
Past Impact |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
Recommended citation
BirdLife International (2013) Species factsheet: Cleptornis marchei. Downloaded from
http://www.birdlife.org on 23/05/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 23/05/2013.
This information is based upon, and updates, the information published in BirdLife International (2000)
Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004)
Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.
To provide new information to update this factsheet or to correct any errors, please email BirdLife
To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.
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