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 |
---|---|---|
- | - | C2a(i) |
Year | Category | Criteria |
---|---|---|
2020 | Vulnerable | C2a(i) |
2016 | Vulnerable | B1ab(ii,iii,v);C2a(i) |
2012 | Vulnerable | B1ab(ii,iii,v);C2a(i) |
2008 | Vulnerable | B1a+b(ii,iii,v); C2a(i) |
2004 | Vulnerable | |
2000 | Vulnerable | |
1996 | Vulnerable | |
1994 | Vulnerable | |
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) | 21,600 km2 | medium |
Number of locations | 6-10 | - |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 2500-9999 mature individuals | poor | estimated | 2000 |
Population trend | decreasing | poor | inferred | 2009-2024 |
Rate of change over the past 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
Rate of change over the future 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
Generation length | 5.1 years | - | - | - |
Number of subpopulations | 2-100 | - | - | - |
Population justification: Ornithological surveys across 27 sites on nine mountains in West-Central Java between 2018 and 2020 found the species at 23 sites and 8 mountains with a mean encounter rate of 0.35 groups/hour (C. Devenish, A.R. Junaid and S. Marsden in litt. 2020). The population size is thus preliminarily estimated to fall into 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: Rates of forest loss have reduced to 1-2% (Tracewski et al. 2016, Global Forest Watch 2020) over a three-generation period (15.3 years; Bird et al. 2020) in recent years. However, due to continued habitat loss within the lower altitudinal range of the species, as well as possible effects of exploitation for the wild bird trade that may exceed declines beyond rates of forest loss alone, an on-going population reduction is inferred to be occurring at a rate of 1-9% over three generations.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Indonesia | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Indonesia | Gunung Burangrang - Tangkuban Perahu |
Indonesia | Gunung Ceremai |
Indonesia | Gunung Gede - Pangrango |
Indonesia | Gunung Halimun |
Indonesia | Gunung Papandayan-Kamojang |
Indonesia | Gunung Salak |
Indonesia | Gunung Slamet |
Indonesia | Gunung Tilu-Simpang |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Moist Lowland | suitable | resident |
Forest | Subtropical/Tropical Moist Montane | major | resident |
Altitude | 900 - 3000 m | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Agriculture & aquaculture | Annual & perennial non-timber crops - Scale Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Agriculture & aquaculture | Annual & perennial non-timber crops - Shifting agriculture | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Agriculture & aquaculture | Livestock farming & ranching - Agro-industry grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Biological resource use | Hunting & trapping terrestrial animals - Intentional use (species is the target) | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
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Energy production & mining | Renewable energy | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Residential & commercial development | Commercial & industrial areas | Timing | Scope | Severity | Impact | ||||
Future | Minority (<50%) | Slow, Significant Declines | Low Impact: 3 | ||||||
|
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Residential & commercial development | Tourism & recreation areas | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
Purpose | Scale |
---|---|
Pets/display animals, horticulture | subsistence, national |
Recommended citation
BirdLife International (2024) Species factsheet: Javan Cochoa Cochoa azurea. Downloaded from
https://datazone.birdlife.org/species/factsheet/javan-cochoa-cochoa-azurea on 23/12/2024.
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 23/12/2024.