Data Zone
Taxonomic note
Ninox scutulata, N. japonica, N. randi and N. obscura (del Hoyo and Collar 2014) were previously lumped as N. scutulata following Sibley and Monroe (1990, 1993).
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 |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2021 | Least Concern | |
| 2016 | Least Concern | |
| 2014 | Least Concern | |
| 2012 | Not Recognised | |
| 2008 | Not Recognised | |
| 2004 | Not Recognised | |
| 2000 | Not Recognised | |
| 1994 | Not Recognised | |
| 1988 | Not Recognised |
| Migratory status | not a migrant | Forest dependency | medium |
| Land-mass type | Average mass | 191 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 15,300,000 km2 | |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | - | - | - |
| Population trend | decreasing | - | suspected | 2016-2030 |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 1-19% | - | - | - |
| Rate of change over the future 10 years/3 generations (longer of the two periods) | 1-19% | - | - | - |
| Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 1-19% | - | - | - |
| Generation length | 4.56 years | - | - | - |
Population justification: The global population size has not been quantified, but the species is reported to be uncommon on Borneo and Sumatra, rare on Java, locally fairly common in the north Indian subcontinent, and relatively common in southeast Asia (Olsen et al. 2020).
Trend justification: Although the species utilises artificial habitats in close proximity to human habitation in the west of its range, it exclusively uses primary forest away from human habitation in southeast Asia, making it vulnerable to habitat loss through deforestation (König and Weick 2008). During 2001-2020, 19% of forest cover was lost across this species’s range (Global Forest Watch 2021), equating to a loss of 14.2% over three generations (13.68 years [Bird et al. 2020]). During 2016-2020, 6.7% of forest cover was lost (Global Forest Watch 2021), equivalent to 21.1% when projected forward over three generations. Given its ability to use modified habitats in at least some of its range, and in the absence of any other known threats, the global population is suspected to be declining at a rate of <20% over three generations.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Bangladesh | extant | native | yes | |||
| Bhutan | extant | native | yes | |||
| Brunei | extant | native | yes | |||
| Cambodia | extant | native | yes | |||
| China (mainland) | extant | native | yes | |||
| Hong Kong (China) | extant | native | yes | |||
| India | extant | native | yes | |||
| Indonesia | extant | native | yes | |||
| Laos | extant | native | yes | |||
| Malaysia | extant | native | yes | |||
| Myanmar | extant | native | yes | |||
| Nepal | extant | native | yes | |||
| Philippines | extant | native | yes | |||
| Singapore | extant | native | yes | |||
| Sri Lanka | extant | native | yes | |||
| Thailand | extant | native | yes | |||
| Vietnam | extant | native | yes |
| Country/Territory | IBA Name |
|---|
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Plantations | suitable | resident |
| Artificial/Terrestrial | Rural Gardens | suitable | resident |
| Artificial/Terrestrial | Urban Areas | suitable | resident |
| Forest | Subtropical/Tropical Mangrove Vegetation Above High Tide Level | suitable | resident |
| Forest | Subtropical/Tropical Moist Lowland | suitable | resident |
| Forest | Subtropical/Tropical Swamp | suitable | resident |
| Shrubland | Subtropical/Tropical Dry | suitable | resident |
| Shrubland | Subtropical/Tropical Moist | suitable | resident |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | resident |
| Altitude | 0 - 1500 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Biological resource use | Logging & wood harvesting - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Purpose | Scale |
|---|---|
| Food - human | subsistence, national |
| Pets/display animals, horticulture | international |
Recommended citation
BirdLife International (2024) Species factsheet: Brown Boobook Ninox scutulata. Downloaded from
https://datazone.birdlife.org/species/factsheet/brown-boobook-ninox-scutulata on 19/12/2024.
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 19/12/2024.