Data Zone
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. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | C2a(i) | C2a(i); D1 |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Endangered | C2a(i) |
| 2012 | Endangered | C2a(i) |
| 2008 | Endangered | C2a(i) |
| 2004 | Endangered | |
| 2000 | Endangered | |
| 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) | 126,000 km2 | medium |
| Number of locations | 11-100 | - |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 300-500 mature individuals | medium | estimated | 2001 |
| Population trend | decreasing | poor | suspected | 1988-2044 |
| 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 | 18.5 years | - | - | - |
| Number of subpopulations | 2-100 | - | - | - |
| Percentage of mature individuals in largest subpopulation | 1-89% | - | - | - |
Population justification: The population is estimated to number 600-900 individuals, roughly equating to 300-500 mature individuals, based on a 1:1 ratio of adults to juvenile and immature birds, as recorded in past studies (B. van Balen in litt. 2012).
Trend justification: This species is suspected to be in decline at a moderate rate, owing to on-going habitat loss and degradation in the face of human population growth, combined with capture for trade. Recent nest protection may have improved reproductive success, but the benefits accrued may have been countered by an apparent increase in trade of this species following its elevation to national bird.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Indonesia | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Indonesia | Alas Purwo |
| Indonesia | Baluran |
| Indonesia | Dataran Tinggi Hyang |
| Indonesia | Gunung Aseupan |
| Indonesia | Gunung Bromo Tengger-Semeru |
| Indonesia | Gunung Burangrang - Tangkuban Perahu |
| Indonesia | Gunung Gede - Pangrango |
| Indonesia | Gunung Halimun |
| Indonesia | Gunung Ijen |
| Indonesia | Gunung Karang |
| Indonesia | Gunung Kawi-Kelud |
| Indonesia | Gunung Liman-Wilis |
| Indonesia | Gunung Malabar |
| Indonesia | Gunung Masigit-Kareumbi |
| Indonesia | Gunung Merapi |
| Indonesia | Gunung Muria |
| Indonesia | Gunung Pancar |
| Indonesia | Gunung Papandayan-Kamojang |
| Indonesia | Gunung Raung |
| Indonesia | Gunung Salak |
| Indonesia | Gunung Sawal |
| Indonesia | Gunung Segara |
| Indonesia | Gunung Slamet |
| Indonesia | Gunung Tampomas |
| Indonesia | Gunung Tilu-Simpang |
| Indonesia | Gunung Ungaran |
| Indonesia | Meru Betiri |
| Indonesia | Pegunungan Dieng |
| Indonesia | Rawa Danau |
| Indonesia | Tahura R. Soerjo |
| Indonesia | Telaga Warna-Cibulao |
| Indonesia | Teluk Lenggasana - Pulau Sempu |
| Indonesia | Ujung Kulon |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Plantations | suitable | resident |
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Forest | Subtropical/Tropical Moist Montane | major | resident |
| Altitude | 0 - 2000 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: 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 | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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| Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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| Natural system modifications | Fire & fire suppression - Trend Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Residential & commercial development | Housing & urban 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 Hawk-eagle Nisaetus bartelsi. Downloaded from
https://datazone.birdlife.org/species/factsheet/javan-hawk-eagle-nisaetus-bartelsi 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.