Data Zone
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 |
|---|---|---|
| - | B1ab(iii)+2ab(iii) | B1ab(iii)+2ab(iii); D2 |
| Year | Category | Criteria |
|---|---|---|
| 2017 | Endangered | B1ab(iii)+2ab(iii) |
| 2016 | Critically Endangered | B1ab(iii) |
| 2012 | Critically Endangered | B1ab(iii) |
| 2010 | Critically Endangered | B1a+b(iii) |
| 2009 | Critically Endangered | B1a+b(iii) |
| 2008 | Critically Endangered | |
| 2006 | Critically Endangered | |
| 2004 | Endangered | |
| 2000 | Endangered | |
| 1996 | Critically Endangered | |
| 1994 | Critically Endangered | |
| 1988 | Threatened |
| Migratory status | not a migrant | Forest dependency | High |
| Land mass type |
Land-mass type - continent |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 140 | medium |
| Extent of Occurrence breeding/resident (km2) | 43 | |
| Number of locations | 1 | - |
| Fragmentation | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 2400 | good | estimated | 2000 |
| Population trend | Stable | medium | estimated | - |
| 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 | 1 | - | - | - |
| Largest subpopulations | 100 | - | - | - |
| Generation length (yrs) | 4.4 | - | - | - |
Population justification: A survey in 1999-2000 estimated the population at 1,200 pairs or 2,400 mature individuals, and repeat surveys in 2006, 2007 and 2015 found that it had not changed significantly (J. John in litt. 2016). This total roughly equates to 3,600 individuals in total.
Trend justification: Although available habitat is probably declining in extent and quality, repeat surveys have not revealed population declines (J. John in litt. 2007). Habitat has been lost from outside the northern end of the Uluguru Nature Reserve, but restoration in the 100 ha Bunduki gap is being conducted, hence the population may remain stable into the future.
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Tanzania | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| Tanzania | Uluguru Mountains |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Montane | major | resident |
| Altitude | 1100 - 1950 m | Occasional altitudinal limits |
| 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 Declines | Low Impact: 5 | ||||||
|
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| Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Whole (>90%) | Slow, Significant Declines | Medium Impact: 7 | ||||||
|
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| Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
| Future | Whole (>90%) | Unknown | Unknown | ||||||
|
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Unspecified species | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Unknown | Unknown | ||||||
|
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Recommended citation
BirdLife International (2021) Species factsheet: Malaconotus alius. Downloaded from
http://www.birdlife.org on 26/02/2021.
Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 26/02/2021.
