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 |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Near Threatened | A2c+3c+4c |
| 2012 | Near Threatened | A2c+3c+4c |
| 2008 | Near Threatened | A2c; A3c; A4c |
| 2004 | Near Threatened | |
| 2000 | Lower Risk/Near Threatened | |
| 1994 | Lower Risk/Least Concern | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | not a migrant | Forest dependency | medium |
| Land-mass type |
Land-mass type - continent Land-mass type - shelf island |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 2,800,000 | medium |
| Severely fragmented? | no | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Number of mature individuals | unknown | not applicable | not applicable | 0 |
| Population trend | decreasing | poor | suspected | 2011-2022 |
| Decline % (10 years/3 generations future) | 20-29 | - | - | - |
| Decline % (10 years/3 generations past and future) | 20-29 | - | - | - |
| Generation length (years) | 3.7 | - | - | - |
Population justification: The global population size has not been quantified, but the species is described as rather rare (Konig et al. 1999).
Trend justification: Forest destruction in the Sundaic lowlands of Indonesia has been extensive, and the situation is little different in Thailand and Malaysia. However, the species's ability to persist in secondary growth and at higher elevations, where forest destruction has been less severe, suggests that its decline has been moderately rapid; less rapid than for many lowland primary forest specialists.
| Country/Territory | Presence | Origin | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Brunei | extant | native | yes | |||
| Indonesia | extant | native | yes | |||
| Malaysia | extant | native | yes | |||
| Philippines | extant | native | yes | |||
| Thailand | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Malaysia | Ulu Muda |
| Malaysia | Bintang Range |
| Malaysia | Central Titiwangsa Range |
| Malaysia | Selangor Heritage Park |
| Malaysia | Endau-Rompin |
| Malaysia | Panti forest |
| Malaysia | Krau Wildlife Reserve |
| Malaysia | Taman Negara National Park |
| Malaysia | South-east Pahang peat swamp forest |
| Malaysia | Mount Kinabalu |
| Malaysia | Trus Madi Range |
| Malaysia | Kinabatangan floodplain |
| Malaysia | Danum Valley Conservation Area |
| Malaysia | Tabin Wildlife Reserve |
| Malaysia | Kabili-Sepilok |
| Malaysia | Bau Limestone |
| Malaysia | Lanjak Entimau Wildlife Sanctuary |
| Malaysia | Dulit Range |
| Malaysia | Niah National Park |
| Malaysia | Lambir Hills National Park |
| Malaysia | Mulu - Buda Protected Area |
| Malaysia | Kelabit Highlands |
| Thailand | Bala Sector, Hala-Bala Wildlife Sanctuary |
| Thailand | Chaloem Pra Kiet (Pa Phru to Daeng) |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Subtropical/Tropical Heavily Degraded Former Forest | marginal | resident |
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Forest | Subtropical/Tropical Swamp | suitable | resident |
| Altitude | 0 - 600 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 | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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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 | 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 - Increase in fire frequency/intensity | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Recommended citation
BirdLife International (2023) Species factsheet: Otus rufescens. Downloaded from
http://datazone.birdlife.org/species/factsheet/reddish-scops-owl-otus-rufescens on 29/09/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 29/09/2023.
