Data Zone
Taxonomic note
Centropus chlororhynchos (del Hoyo and Collar 2014) was previously listed as C. chlororhynchus.
Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | B1ab(i,ii,iii,iv,v); C2a(i) |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Vulnerable | B1ab(i,ii,iii,iv,v);C2a(i) |
| 2013 | Vulnerable | B1ab(i,ii,iii,iv,v);C2a(i) |
| 2012 | Vulnerable | B1ab(i,ii,iii,iv,v);C2a(i) |
| 2008 | Vulnerable | B1a+b(i,ii,iii,iv,v); C2a(i) |
| 2004 | Vulnerable | |
| 2000 | Vulnerable | |
| 1996 | Endangered | |
| 1994 | Endangered | |
| 1988 | Threatened |
| Migratory status | not a migrant | Forest dependency | high |
| Land-mass type |
shelf island |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 13,300 km2 | medium |
| Number of locations | 11-100 | - |
| Severely fragmented? | yes | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 2500-9999 mature individuals | poor | estimated | 2000 |
| Population trend | decreasing | poor | suspected | 2011-2022 |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 10-19% | - | - | - |
| Rate of change over the future 10 years/3 generations (longer of the two periods) | 10-19% | - | - | - |
| Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 10-19% | - | - | - |
| Generation length | 3.8 years | - | - | - |
| Number of subpopulations | 2-100 | - | - | - |
| Percentage of mature individuals in largest subpopulation | 1-89% | - | - | - |
Population justification: The population is unlikely to number more than a few thousand individuals, based on available records and survey results, thus there are assumed to be fewer than 10,000 mature individuals. It is placed in the band 2,500-9,999 mature individuals. This equates to 3,750-14,999 individuals in total, rounded here to 3,500-15,000 individuals.
Trend justification: On-going illegal logging of wet zone forests is the principal threat to this species and is suspected to be driving a continuing, moderate population decline.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Sri Lanka | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Sri Lanka | Amanawala |
| Sri Lanka | Ayagama |
| Sri Lanka | Bodhinagala |
| Sri Lanka | Delgoda / Kudumiriya / Kobahadukanda |
| Sri Lanka | Delmella |
| Sri Lanka | Delwela / Panilkanda / Walankanda |
| Sri Lanka | Kithulgala |
| Sri Lanka | Morapitiya-Runakanda |
| Sri Lanka | Morningside and Handapan Ella Plains (Sinharaja IBA) |
| Sri Lanka | Nakiyadeniya / Kanneliya / Dediyagala |
| Sri Lanka | Peak Wilderness Sanctuary |
| Sri Lanka | Tangamalai |
| Sri Lanka | Yagirala |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Altitude | 0 - 760 m | 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 | Minority (<50%) | Slow, Significant Declines | Low Impact: 4 | ||||||
|
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| 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: (large scale) [harvest] | 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 | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
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| Invasive and other problematic species, genes & diseases | Problematic native species/diseases | Timing | Scope | Severity | Impact | ||||
| Ongoing | Unknown | Unknown | Unknown | ||||||
|
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| Natural system modifications | Fire & fire suppression - Increase in fire frequency/intensity | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 4 | ||||||
|
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Recommended citation
BirdLife International (2024) Species factsheet: Green-billed Coucal Centropus chlororhynchos. Downloaded from
https://datazone.birdlife.org/species/factsheet/green-billed-coucal-centropus-chlororhynchos on 22/11/2024.
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 22/11/2024.