IUCN Red List Criteria
| Critically Endangered |
|
| Endangered |
|
| Vulnerable |
C2a(ii) |
IUCN Red List history
| Year |
Category |
| 2012 |
Vulnerable |
| 2010 |
Near Threatened |
Species attributes
| Migratory status |
not a migrant |
Forest dependency |
High |
| Land mass type |
continent
|
Average mass |
- |
Distribution
| |
Estimate |
Data quality |
| Extent of Occurrence breeding/resident (km2) |
590 |
medium |
| Number of locations |
11-100 |
- |
| Fragmentation |
|
- |
Population & trend
| |
Estimate |
Data quality |
Derivation |
Year of estimate |
| No. of mature individuals |
2500-9999 |
medium |
Estimated |
2012 |
| Population trend |
Decreasing |
poor |
|
- |
| Number of subpopulations |
1 |
- |
- |
- |
| Largest subpopulation |
2500-9999 |
- |
- |
- |
| Generation length (yrs) |
3.7 |
- |
- |
- |
|
Population justification: Extensive surveys conducted since 2008 have resulted in an estimate of 1,000-2,000 mature individuals, all in one subpopulation (Zhou Fang et al. in litt. 2010), with an estimate of 1,300 individuals in three reserves (Nonggang, Bangliang and Chunxiu) (Zhou Fang in litt. 2012), but the extent of suitable habitat implies that there are probably more than 2,500 mature individuals in total. |
Trend justification: Population trends have not been quantified; however, given that its habitat is selectively logged, the species is suspected to be in decline owing to on-going habitat degradation.
|
Country/Territory distribution
| Country/Territory |
Occurrence status |
Extinct |
Breeding |
Non-breeding |
Passage |
| China (mainland) |
Native |
No |
|
|
|
Habitats & altitude
| Habitat (level 1) |
Habitat (level 2) |
Importance |
Occurrence |
| Forest |
Subtropical/Tropical Moist Lowland |
major |
resident |
| Rocky areas (eg. inland cliffs, mountain peaks) |
|
suitable |
resident |
|
Altitude
|
0 - 0 m
|
Occasional altitudinal limits
|
|
Threats & impact
| Threat (level 1) |
Threat (level 2) |
Impact and Stresses |
| Agriculture & Aquaculture |
Annual & perennial non-timber crops / Agro-industry farming |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Slow, Significant Decline |
Medium Impact: |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Transportation & service corridors |
Roads & railroads |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
Slow, Significant Decline |
Low Impact: 5 |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Biological resource use |
Fishing & harvesting aquatic resources / Unintentional effects: (subsistence/small scale) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Slow, Significant Decline |
Medium Impact: |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
Recommended citation
BirdLife International (2013) Species factsheet: Stachyris nonggangensis. Downloaded from
http://www.birdlife.org on 22/05/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 22/05/2013.
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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