IUCN Red List Criteria
| Critically Endangered |
|
| Endangered |
|
| Vulnerable |
D1+2 |
IUCN Red List history
| Year |
Category |
| 2012 |
Vulnerable |
| 2008 |
Vulnerable |
| 2004 |
Vulnerable |
| 2000 |
Vulnerable |
| 1996 |
Vulnerable |
| 1994 |
Vulnerable |
| 1988 |
Threatened |
Species attributes
| Migratory status |
not a migrant |
Forest dependency |
Low |
| Land mass type |
|
Average mass |
- |
Distribution
| |
Estimate |
Data quality |
| Extent of Occurrence breeding/resident (km2) |
27 |
medium |
| Number of locations |
1 |
- |
| Fragmentation |
|
- |
Population & trend
| |
Estimate |
Data quality |
Derivation |
Year of estimate |
| No. of mature individuals |
|
good |
Estimated |
1995 |
| Population trend |
Stable |
poor |
|
- |
| Number of subpopulations |
1 |
- |
- |
- |
| Largest subpopulation |
350 |
- |
- |
- |
| Generation length (yrs) |
5 |
- |
- |
- |
|
Population justification: McCormack (1997) |
|
Trend justification: Populations were formerly thought to be stable. Owing to a lack of new data this is still suspected to be the case. |
Country/Territory distribution
| Country/Territory |
Occurrence status |
Extinct |
Breeding |
Non-breeding |
Passage |
| Cook Islands |
Native |
No |
Yes |
|
|
Habitats & altitude
| Habitat (level 1) |
Habitat (level 2) |
Importance |
Occurrence |
| Artificial/Terrestrial |
Arable Land |
suitable |
resident |
| Caves and Subterranean Habitats (non-aquatic) |
Caves |
major |
breeding |
| Forest |
Subtropical/Tropical Moist Lowland |
suitable |
resident |
| Shrubland |
Subtropical/Tropical Moist |
major |
resident |
|
Altitude
|
0 - 0 m
|
Occasional altitudinal limits
|
|
Threats & impact
| Threat (level 1) |
Threat (level 2) |
Impact and Stresses |
| Human intrusions & disturbance |
Recreational activities |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Negligible declines |
Low Impact: 5 |
| Stresses |
|---|
| Species disturbance |
|
| Invasive non-native/alien species/diseases |
Problematic native species/diseases |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Negligible declines |
Low Impact: 5 |
| Stresses |
|---|
| Species mortality |
|
| Invasive non-native/alien species/diseases |
Problematic native species/diseases / Coconut Crab (Birgus latro) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Negligible declines |
Low Impact: 5 |
|
| Invasive non-native/alien species/diseases |
Problematic native species/diseases / Land Crab (Cardisoma longipes) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Negligible declines |
Low Impact: 5 |
|
| Invasive non-native/alien species/diseases |
Invasive non-native/alien species/diseases / Polynesian rat (Rattus exulans) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Unknown |
Unknown |
| Stresses |
|---|
| Reduced reproductive success, Species mortality |
|
| Invasive non-native/alien species/diseases |
Invasive non-native/alien species/diseases / Polynesian rat (Rattus exulans) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Unknown |
Unknown |
Unknown |
|
| Climate change & severe weather |
Habitat shifting & alteration |
Timing |
Scope |
Severity |
Impact |
| Future |
Whole (>90%) |
Unknown |
Unknown |
| Stresses |
|---|
| Indirect ecosystem effects, Ecosystem degradation, Ecosystem conversion |
|
Recommended citation
BirdLife International (2013) Species factsheet: Collocalia sawtelli. Downloaded from
http://www.birdlife.org on 19/06/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 19/06/2013.
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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