Taxonomic source(s)
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
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 |
---|---|---|
2024 | Least Concern | |
2016 | Least Concern | |
2012 | Least Concern | |
2009 | Least Concern | |
2008 | Least Concern | |
2004 | Least Concern | |
2000 | Lower Risk/Least Concern | |
1994 | Lower Risk/Least Concern | |
1988 | Lower Risk/Least Concern |
Migratory status | not a migrant | Forest dependency | does not normally occur in forest |
Land-mass type | Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 41,000,000 km2 | |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | unknown | - | - | - |
Population trend | decreasing | - | suspected | - |
Generation length | 4.45 years | - | - | - |
Population justification: The global population size has not been quantified, but the species is reported to be rare to very rare throughout most of its range (del Hoyo et al. 1999), while national population sizes have been estimated at c.100-10,000 breeding pairs in China and < c.100 breeding pairs in Taiwan (Brazil 2009). This species is suspected to be in decline owing to the continuing destruction and degradation of its habitat and use, in Australia, of rodenticides to control rats (del Hoyo et al. 1999).
Trend justification: This species is suspected to be in decline owing to the continuing destruction and degradation of its habitat and use, in Australia, of rodenticides to control rats (del Hoyo et al. 1999).
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Australia | extant | native | yes | |||
Bangladesh | extinct | native | yes | |||
China (mainland) | extant | native | yes | |||
Fiji | extinct | native | yes | |||
Hong Kong (China) | extant | vagrant | yes | |||
India | extant | native | yes | |||
Indonesia | extant | native | yes | |||
Japan | extant | vagrant | yes | |||
Myanmar | extant | native | yes | |||
Nepal | extant | native | yes | |||
New Caledonia (to France) | extant | native | yes | |||
Papua New Guinea | extant | native | yes | |||
Philippines | extant | native | yes | |||
Taiwan, China | 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 |
Grassland | Subtropical/Tropical Dry | suitable | resident |
Grassland | Subtropical/Tropical High Altitude | suitable | resident |
Grassland | Subtropical/Tropical Seasonally Wet/Flooded | suitable | resident |
Grassland | Temperate | suitable | resident |
Savanna | Dry | suitable | resident |
Shrubland | Subtropical/Tropical Dry | suitable | resident |
Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | suitable | resident |
Altitude | 0 - 2500 m | Occasional altitudinal limits |
Purpose | Scale |
---|---|
Food - human | subsistence, national |
Medicine - human & veterinary | subsistence, national |
Pets/display animals, horticulture | international |
Sport hunting/specimen collecting | subsistence, national |
Recommended citation
BirdLife International (2024) Species factsheet: Eastern Grass-owl Tyto longimembris. Downloaded from
https://datazone.birdlife.org/species/factsheet/eastern-grass-owl-tyto-longimembris on 21/12/2024.
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 21/12/2024.