Taxonomic note
Dessonornis anomalus, D. macclounii and D. mbuluensis (del Hoyo and Collar 2016) were previously lumped as Cossypha anomala following Dowsett and Forbes-Watson (1993) and Sibley and Monroe (1990, 1993).
Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | - | - |
Year | Category | Criteria |
---|---|---|
2018 | Near Threatened | B1b(i) |
2016 | Near Threatened | B1b(i) |
Migratory status | not a migrant | Forest dependency | Medium |
Land mass type | Average mass | 24 g |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence breeding/resident (km2) | 21,700 | medium |
Number of locations | - | |
Severely Fragmented | - |
Value | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
No. of mature individuals | unknown | not applicable | not applicable | 0 |
Population trend | Decreasing | inferred | - | |
Decline (3 years/1 generation past) | - | - | - | |
Decline (5 years/1 generation past) | - | - | - | |
Decline (10 years/1 generation past) | - | - | - | |
Decline (10 years/3 generation future) | - | - | - | |
Decline (10 years/3 generation past and future) | - | - | - | |
Number of subpopulations | - | - | - | |
Percentage in largest subpopulation | - | - | - | |
Generation length (yrs) | 4.6 | - | - | - |
Population justification: It is abundant on Mount Mulanji (Collar 2016), but the global population has not been quantified.
Trend justification: The population is inferred to be in decline owing to ongoing habitat destruction and fragmentation.
Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
---|---|---|---|---|---|---|
Malawi | N | Extant | Yes | |||
Mozambique | N | Extant | Yes |
Country/Territory | IBA Name |
---|---|
Malawi | Mount Mulanje Forest Reserve |
Mozambique | Mount Namuli |
Mozambique | Mount Chiperone |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Moist Montane | major | resident |
Altitude | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Energy production & mining | Mining & quarrying | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Natural system modifications | Fire & fire suppression - Increase in fire frequency/intensity | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Residential & commercial development | Housing & urban areas | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
|
Recommended citation
BirdLife International (2022) Species factsheet: Dessonornis anomalus. Downloaded from
http://www.birdlife.org on 14/08/2022.
Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 14/08/2022.