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 |
|---|---|---|
| - | - | A2c+3c+4c |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Vulnerable | A2c+3c+4c |
| 2012 | Vulnerable | A2c+3c+4c |
| 2008 | Vulnerable | A2c; A3c; A4c |
| 2004 | Vulnerable | |
| 2000 | Vulnerable | |
| 1996 | Vulnerable | |
| 1994 | Vulnerable | |
| 1988 | Threatened |
| Migratory status | not a migrant | Forest dependency | Does not normally occur in forest |
| Land mass type |
Land-mass type - continent |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 2,570,000 | medium |
| Number of locations | 11-100 | - |
| Fragmentation | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 2500-9999 | poor | estimated | 2000 |
| Population trend | Decreasing | poor | suspected | - |
| Decline (3 years/1 generation past) | - | - | - | |
| Decline (5 years/1 generation past) | - | - | - | |
| Decline (10 years/1 generation past) | - | - | - | |
| Decline (10 years/3 generation future) | 30-49 | - | - | - |
| Decline (10 years/3 generation past and future) | 30-49 | - | - | - |
| Number of subpopulations | 2-100 | - | - | - |
| Largest subpopulations | 1-89 | - | - | - |
| Generation length (yrs) | 4.4 | - | - | - |
Population justification: The population is estimated to number 2,500-9,999 mature individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 3,750-14,999 individuals in total, rounded here to 3,500-15,000 individuals.
Trend justification: Despite a lack of recent data on population trends, a rapid decline is suspected to be continuing, consistent with rates of habitat loss throughout the species's range. In Assam, the species's stronghold in India, recent records suggest the population has undergone a massive decline (Rahmani 2012).
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Bangladesh | N | Extant | Yes | |||
| India | N | Extant | Yes | |||
| Myanmar | N | Extant | Yes | |||
| Nepal | N | Extant | Yes | |||
| Pakistan | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| India | Buxa Tiger Reserve (National Park) |
| India | D'Ering Memorial Wildlife Sanctuary |
| India | Dibang Reserve Forest and adjacent areas |
| India | Dibru - Saikhowa Complex |
| India | Kaziranga National Park |
| India | Majuli |
| India | Manas National Park |
| India | Ripu and Chirang Reserve Forests |
| Nepal | Chitwan National Park |
| Nepal | Sukla Phanta Wildlife Reserve |
| Pakistan | Indus Waterfowl Refuge |
| Pakistan | Mehrano Reserve Lake and Rohri canal wetlands |
| Pakistan | Taunsa Barrage Wildlife Sanctuary |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Grassland | Subtropical/Tropical Seasonally Wet/Flooded | major | resident |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | major | resident |
| Altitude | Occasional altitudinal limits |
| 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%) | Rapid Declines | Medium Impact: 7 | ||||||
|
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| Agriculture & aquaculture | Livestock farming & ranching - Small-holder grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
|
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| Agriculture & aquaculture | Wood & pulp plantations - Agro-industry plantations | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
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| Biological resource use | Gathering terrestrial plants - Unintentional effects (species is not the target) | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
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| Natural system modifications | Dams & water management/use - Large dams | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
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| Natural system modifications | Fire & fire suppression - Increase in fire frequency/intensity | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
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| Residential & commercial development | Timing | Scope | Severity | Impact | |||||
| Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
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Recommended citation
BirdLife International (2019) Species factsheet: Chrysomma altirostre. Downloaded from
http://www.birdlife.org on 22/07/2019.
Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 22/07/2019.
