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 |
|---|---|---|
| - | - | D1 |
| Year | Category | Criteria |
|---|---|---|
| 2019 | Vulnerable | D1 |
| 2016 | Vulnerable | D1 |
| 2012 | Vulnerable | D1 |
| 2008 | Vulnerable | D1 |
| 2004 | Data Deficient | |
| 2000 | Data Deficient | |
| 1996 | Data Deficient | |
| 1994 | Data Deficient | |
| 1988 | Near Threatened |
| Migratory status | not a migrant | Forest dependency | High |
| Land mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 8,500 | medium |
| Extent of Occurrence breeding/resident (km2) | 530 | poor |
| Number of locations | - | |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 250-999 | poor | suspected | 2000 |
| Population trend | Decreasing | poor | 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) | 1-9 | - | - | - |
| Decline (10 years/3 generation past and future) | 1-9 | - | - | - |
| Number of subpopulations | - | - | - | |
| Percentage in largest subpopulation | - | - | - | |
| Generation length (yrs) | 3.6 | - | - | - |
Population justification: There is no evidence for estimating the population size, except for absence records from sites slightly lower than the species's single known historical location. The population size is provisionally placed in the band 250-999 mature individuals.
Trend justification:
Buchanan et al. (2008) calculated the rate of habitat loss within the range of this species as c.5% over three generations based on the rate of apparent habitat loss from remote sensing images, but this seems unlikely given its attitudinal range and needs ground-truthing. Less detailed data is available for later years, but the overall rate of forest loss has slowed, with about 2.2% of forest lost and 5.2% degraded across New Britain (mostly in the lowlands) between 2002 and 2014 (Bryan and Shearman 2015).
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Papua New Guinea | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| Papua New Guinea | Whiteman Range |
| Papua New Guinea | Baining Mountains |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Montane | major | resident |
| Altitude | 1580 - 2400 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Unknown | Unknown | ||||||
|
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Named species | Timing | Scope | Severity | Impact | ||||
| Ongoing | Unknown | Unknown | Unknown | ||||||
|
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Recommended citation
BirdLife International (2023) Species factsheet: Cincloramphus grosvenori. Downloaded from
http://www.birdlife.org on 31/03/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 31/03/2023.
