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. 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 |
|---|---|---|
| - | - | A2c+3c+4c;C2a(i) |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Vulnerable | A2c+3c+4c;C2a(i) |
| 2013 | Vulnerable | A2c+3c+4c;C2a(i) |
| 2012 | Vulnerable | A2c+3c+4c;C2a(i) |
| 2008 | Vulnerable | A2c; A3c; A4c; C2a(i) |
| 2004 | Vulnerable | |
| 2000 | Vulnerable | |
| 1996 | Endangered | |
| 1994 | Endangered | |
| 1988 | Near Threatened |
| Migratory status | not a migrant | Forest dependency | high |
| Land-mass type |
shelf island |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 631,000 km2 | medium |
| Number of locations | 11-100 | - |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 2500-9999 mature individuals | poor | estimated | 1999 |
| Population trend | decreasing | poor | suspected | 1998-2008 |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 30-49% | - | - | - |
| Rate of change over the future 10 years/3 generations (longer of the two periods) | 30-49% | - | - | - |
| Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 30-49% | - | - | - |
| Generation length | 11.6 years | - | - | - |
| Number of subpopulations | 2-100 | - | - | - |
Population justification: The population size is preliminarily estimated to fall into the band 2,500-9,999 mature individuals. This equates to 3,750-14,999 individuals, rounded here to 3,500-15,000 individuals.
Trend justification: Owing to this species' requirement for lowland forest it is suspected to have declined rapidly as forests have been widely cleared within its range. However, it can persist in some modified habitats; thus further research is required to compare population densities in different habitats, and to calculate more accurate rates of deforestation.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Philippines | extant | native | yes |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Altitude | 0 - 650 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Agriculture & aquaculture | Livestock farming & ranching - Agro-industry grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
| Ongoing | Whole (>90%) | Rapid Declines | High Impact: 8 | ||||||
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| Biological resource use | Hunting & trapping terrestrial animals - Intentional use (species is the target) | Timing | Scope | Severity | Impact | ||||
| Ongoing | Unknown | Unknown | Unknown | ||||||
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| Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Whole (>90%) | Rapid Declines | High Impact: 8 | ||||||
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| Climate change & severe weather | Storms & flooding | Timing | Scope | Severity | Impact | ||||
| Past, Likely to Return | Whole (>90%) | Negligible declines | Past Impact | ||||||
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| Energy production & mining | Mining & quarrying | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
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| Geological events | Avalanches/landslides | Timing | Scope | Severity | Impact | ||||
| Past, Likely to Return | Minority (<50%) | Rapid Declines | Past Impact | ||||||
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Recommended citation
BirdLife International (2024) Species factsheet: Philippine Eagle-owl Bubo philippensis. Downloaded from
https://datazone.birdlife.org/species/factsheet/philippine-eagle-owl-bubo-philippensis on 22/12/2024.
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 22/12/2024.