IUCN Red List Criteria
| Critically Endangered |
|
| Endangered |
A2cde;B1ab(ii,iii,v);C2a(i) |
| Vulnerable |
A2cde;B1ab(ii,iii,v);C2a(i);D1 |
IUCN Red List history
| Year |
Category |
| 2012 |
Endangered |
| 2008 |
Endangered |
| 2004 |
Endangered |
| 2000 |
Endangered |
| 1996 |
Vulnerable |
| 1994 |
Vulnerable |
| 1988 |
Threatened |
Species attributes
| Migratory status |
not a migrant |
Forest dependency |
High |
| Land mass type |
|
Average mass |
- |
Distribution
| |
Estimate |
Data quality |
| Extent of Occurrence breeding/resident (km2) |
1,200 |
medium |
| Number of locations |
11-100 |
- |
| Fragmentation |
|
- |
Population & trend
| |
Estimate |
Data quality |
Derivation |
Year of estimate |
| No. of mature individuals |
600-1700 |
medium |
Estimated |
2000 |
| Population trend |
Decreasing |
medium |
|
- |
| Number of subpopulations |
2-100 |
- |
- |
- |
| Largest subpopulation |
51-250 |
- |
- |
- |
| Generation length (yrs) |
6.6 |
- |
- |
- |
|
Population justification: The population estimate of 1,000-2,499 individuals is derived from U. Beichle (in litt. 2000). This equates to 667-1,666 mature individuals, rounded here to 600-1,700 mature individuals. The lack of recent records suggests that the total population may now be far lower than this, possibly fewer than 250 mature individuals, but further work is needed to confirm this. |
|
Trend justification: No new data are available on population trends, but the species is suspected to still be suffering from the partially synergistic effects of forest degradation by cyclones and invasive tree species, as well as accidental mortality from hunting and direct loss of habitat through agricultural expansion. The rate of decline is assumed to have slowed, from very rapid over the last ten years to moderately rapid over the next ten years, since it is not thought that the island has experienced any additional cyclones. |
Country/Territory distribution
| Country/Territory |
Occurrence status |
Extinct |
Breeding |
Non-breeding |
Passage |
| Samoa |
Native |
No |
|
|
|
Important Bird Areas where this species has triggered the IBA criteria
| Country/Territory |
IBA Name |
IBA link |
| Samoa |
Aleipata Marine Protected Area |
 |
| Samoa |
Apia Catchments |
|
| Samoa |
Central Savaii Rainforest (includes Tuasivi Ridge AZE) |
|
| Samoa |
Eastern Upolu Craters |
|
| Samoa |
O Le Pupu-Pu'e National Park |
|
| Samoa |
Uafato-Tiavea Forest |
|
Habitats & altitude
| Habitat (level 1) |
Habitat (level 2) |
Importance |
Occurrence |
| Forest |
Subtropical/Tropical Moist Lowland |
major |
resident |
|
Altitude
|
0 - 1600 m
|
Occasional altitudinal limits
|
|
Threats & impact
| Threat (level 1) |
Threat (level 2) |
Impact and Stresses |
| Agriculture & Aquaculture |
Annual & perennial non-timber crops / Small-holder farming |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
Slow, Significant Decline |
Low Impact: 5 |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Biological resource use |
Hunting & trapping terrestrial animals / Intentional use (species is the target) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
Slow, Significant Decline |
Low Impact: 5 |
| Stresses |
|---|
| Species mortality |
|
| Invasive non-native/alien species/diseases |
Invasive non-native/alien species/diseases / Unspecified trees |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Slow, Significant Decline |
Medium Impact: |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| 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, Unlikely to Return |
Majority (50-90%) |
Rapid Declines |
Past Impact |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion, Species mortality |
|
Utilisation
| Purpose |
Primary form used |
Life stage used |
Source |
Scale |
Level |
Timing |
| Food (human) |
Whole |
Adults and juveniles |
Wild |
Subsistence, National |
Non-trivial |
Recent |
Recommended citation
BirdLife International (2013) Species factsheet: Didunculus strigirostris. Downloaded from
http://www.birdlife.org on 21/05/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 21/05/2013.
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.
email a friend
printable version
close