Taxonomic note
Coracornis sanghirensis (del Hoyo and Collar 2016) was previously listed as Colluricincla sanghirensis.
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.
Rozendaal, F. G.; Lambert, F. R. 1999. The taxomonic and conservation status of Pinarolestes sanghirensis Oustalet 1881. Forktail 15: 1-13.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
B1ab(ii,iii,v); C2a(i,ii) | B1ab(ii,iii,v)+2ab(ii,iii,v); C2a(i,ii); D | B1ab(ii,iii,v)+2ab(ii,iii,v); C2a(i,ii); D1+2 |
Year | Category | Criteria |
---|---|---|
2021 | Critically Endangered | B1ab(ii,iii,v); C2a(i,ii) |
2018 | Critically Endangered | B1ab(ii,iii,v); C2a(i,ii) |
2016 | Critically Endangered | B1ab(ii,iii,v)+2ab(ii,iii,v); C2a(i,ii) |
2015 | Critically Endangered | B1ab(ii,iii,v)+2ab(ii,iii,v); C2a(i,ii) |
2012 | Critically Endangered | B1ab(ii,iii,v)+2ab(ii,iii,v);C2a(i,ii) |
2010 | Critically Endangered | B1a+b(ii,iii,v); B2a+b(ii,iii,v); C2a(ii) |
2009 | Critically Endangered | B1a+b(ii,iii,v); B2a+b(ii,iii,v); C2a(ii) |
2008 | Critically Endangered | |
2004 | Critically Endangered | |
2000 | Critically Endangered | |
1994 | Not Recognised | |
1988 | Not Recognised |
Migratory status | not a migrant | Forest dependency | high |
Land-mass type | Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 8 km2 | medium |
Area of Occupancy (breeding/resident) | 12 km2 | medium |
Number of locations | 1 | - |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 50-249 mature individuals | medium | estimated | 2009 |
Population trend | decreasing | poor | inferred | - |
Generation length | 3.5 years | - | - | - |
Number of subpopulations | 1 | - | - | - |
Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: The population size is likely to be extremely low (possibly fewer than 100 birds), given the tiny area of remaining habitat. An initial population estimate of 56-205 individuals (BirdLife Indonesia 2007) has not increased despite more recent surveys accessing a larger potential area. The most recent population estimate is between 92-255 individuals in total (Burung Indonesia 2009) and so is placed in the band 50-249 mature individuals. There is the potential for the population to be even lower than this, as these estimates are based on density estimates created from very few presence points (Burung Indonesia 2009).
Trend justification: This species is assumed to be declining owing to on-going forest loss within its restricted range. In 2009, reports suggested that numbers of this species were in serious decline owing to forest clearance (Sykes 2009). The species was not detected in 2015 at the most northwesterly and most southerly points where it was present in 2009, where habitat has been further degraded and from which the range is inferred to be continuing to decline (Martin 2018).
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Indonesia | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Indonesia | Gunung Sahendaruman |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Moist Lowland | major | resident |
Altitude | 600 - 1040 m | Occasional altitudinal limits | (min) 575 m |
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 Declines | Medium Impact: 6 | ||||||
|
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Agriculture & aquaculture | Wood & pulp plantations - Scale Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Rapid Declines | Medium Impact: 7 | ||||||
|
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Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
Future | Whole (>90%) | Unknown | Unknown | ||||||
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Recommended citation
BirdLife International (2024) Species factsheet: Sangihe Whistler Coracornis sanghirensis. Downloaded from
https://datazone.birdlife.org/species/factsheet/sangihe-whistler-coracornis-sanghirensis on 24/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 24/12/2024.