IUCN Red List Criteria
| Critically Endangered |
|
| Endangered |
|
| Vulnerable |
A3cd |
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 |
High |
| Land mass type |
shelf island
|
Average mass |
185 g
|
Distribution
| |
Estimate |
Data quality |
| Extent of Occurrence breeding/resident (km2) |
39,200 |
medium |
| Number of locations |
11-100 |
- |
| Fragmentation |
|
- |
Population & trend
| |
Estimate |
Data quality |
Derivation |
Year of estimate |
| No. of mature individuals |
1500-7000 |
poor |
Estimated |
1999 |
| Population trend |
Decreasing |
medium |
|
- |
| Number of subpopulations |
2-100 |
- |
- |
- |
| Largest subpopulation |
|
- |
- |
- |
| Generation length (yrs) |
5.6 |
- |
- |
- |
|
Population justification: The population is estimated to number 2,500-9,999 individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals. |
|
Trend justification: The population is suspected to be declining in line with habitat loss and degradation, and hunting pressure. If present trends continue, the remaining unprotected forest, especially at the lower altitudes preferred by this species, will disappear within decades (Stattersfield et al. 1998). |
Country/Territory distribution
| Country/Territory |
Occurrence status |
Extinct |
Breeding |
Non-breeding |
Passage |
| Madagascar |
Native |
No |
|
|
|
Important Bird Areas where this species has triggered the IBA criteria
| Country/Territory |
IBA Name |
IBA link |
| Madagascar |
Ambatovaky Special Reserve |
 |
| Madagascar |
Andohahela National Park: Parcel I |
|
| Madagascar |
Andringitra National Park |
|
| Madagascar |
Anjanaharibe Sud Special Reserve |
|
| Madagascar |
Anjozorobe SAPM |
|
| Madagascar |
Ankeniheny-Lakato Future SAPM |
|
| Madagascar |
Betampona Strict Nature Reserve |
|
| Madagascar |
Bezavona Classified Forest |
|
| Madagascar |
Daraina (Loky-Manambato) SAPM |
|
| Madagascar |
Makira SAPM |
|
| Madagascar |
Mananara-North National Park |
|
| Madagascar |
Mangerivola Special Reserve |
|
| Madagascar |
Mantadia National Park and Analamazaotra Special Reserve |
|
| Madagascar |
Marojejy National Park |
|
| Madagascar |
Masoala National Park |
|
| Madagascar |
Midongy South National Park |
|
| Madagascar |
Onive Classified Forest |
|
| Madagascar |
Ranomafana National Park |
|
| Madagascar |
Tsaratanana Strict Nature Reserve and surrounding areas |
|
| Madagascar |
Vondrozo Classified Forest and surrounding areas |
|
| Madagascar |
Zahamena National Park |
|
| Madagascar |
Zahamena-Mantadia SAPM |
|
Habitats & altitude
| Habitat (level 1) |
Habitat (level 2) |
Importance |
Occurrence |
| Forest |
Subtropical/Tropical Moist Lowland |
major |
resident |
| Forest |
Subtropical/Tropical Moist Montane |
suitable |
resident |
|
Altitude
|
0 - 1200 m
|
Occasional altitudinal limits
|
|
Threats & impact
| Threat (level 1) |
Threat (level 2) |
Impact and Stresses |
| Agriculture & Aquaculture |
Annual & perennial non-timber crops / Shifting agriculture |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Slow, Significant Decline |
Medium Impact: |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Biological resource use |
Fishing & harvesting aquatic resources / Unintentional effects: (large scale) |
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 |
|
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: Brachypteracias leptosomus. Downloaded from
http://www.birdlife.org on 25/05/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 25/05/2013.
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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