Data Zone
Taxonomic source(s)
Christidis, L. and Boles, W.E. 2008. Systematics and taxonomy of Australian birds. CSIRO Publishing, Collingwood, Australia.
Christidis, L.; 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. 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 | 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 | full migrant | Forest dependency | Low |
| Land mass type | Average mass | 94 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 51,500,000 | |
| Extent of Occurrence non-breeding (km2) | 36,000,000 | |
| Number of locations | - | |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | poor | estimated | 2009 | |
| Population trend | Unknown | not applicable | - | |
| Decline (3 years/1 generation past) | - | - | - | |
| Decline (5 years/1 generation past) | - | - | - | |
| Decline (10 years/1 generation past) | - | - | - | |
| Decline (10 years/3 generation future) | - | - | - | |
| Decline (10 years/3 generation past and future) | - | - | - | |
| Number of subpopulations | - | - | - | |
| Percentage in largest subpopulation | - | - | - | |
| Generation length (yrs) | 4.1 | - | - | - |
Population justification: The global population is estimated to number c.100,000-1,000,000 individuals (Wetlands International 2006), while national population estimates include: c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in China; c.10,000-100,000 breeding pairs in Taiwan; c.100-100,000 breeding pairs and c.50-10,000 individuals on migration in Korea; c.100-10,000 breeding pairs and c.50-1,000 individuals on migration in Japan and < c.100,000 breeding pairs and < c.1,000 individuals on migration in Russia (Brazil 2009).
Trend justification: The overall population trend is uncertain, as some populations are decreasing, while others are increasing or have unknown trends (Wetlands International 2006).
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Australia | V | Extant | ||||
| Bangladesh | N | Extant | ||||
| Brunei | N | Extant | ||||
| Cambodia | N | Extant | ||||
| China (mainland) | N | Extant | ||||
| Christmas Island (to Australia) | V | Extant | ||||
| Guam (to USA) | N | Extant | Yes | |||
| India | N | Extant | ||||
| Indonesia | N | Extant | ||||
| Japan | N | Extant | ||||
| Laos | N | Extant | ||||
| Malaysia | N | Extant | ||||
| Maldives | N | Extant | ||||
| Micronesia, Federated States of | N | Extant | Yes | |||
| Myanmar | N | Extant | ||||
| Nepal | N | Extant | ||||
| North Korea | N | Extant | Yes | |||
| Northern Mariana Islands (to USA) | N | Extant | Yes | |||
| Oman | N | Extant | Yes | |||
| Pakistan | N | Extant | ||||
| Palau | N | Extant | Yes | |||
| Papua New Guinea | N | Extant | ||||
| Philippines | N | Extant | ||||
| Russia | N | Extant | ||||
| Russia (Asian) | N | Extant | ||||
| Seychelles | N | Extant | ||||
| Singapore | N | Extant | ||||
| Solomon Islands | N | Extant | ||||
| South Korea | N | Extant | ||||
| Sri Lanka | N | Extant | ||||
| Taiwan, China | N | Extant | ||||
| Thailand | N | Extant | ||||
| Timor-Leste | N | Extant | Yes | |||
| USA | V | Extant | ||||
| Vietnam | N | Extant | ||||
| Yemen | V | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| Philippines | Zambales mountains |
| Philippines | Buguey wetlands |
| Philippines | Lake Naujan |
| Japan | Middle Ishikari River basin |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Aquatic & Marine | Artificial/Aquatic - Seasonally Flooded Agricultural Land | suitable | breeding |
| Artificial/Aquatic & Marine | Artificial/Aquatic - Seasonally Flooded Agricultural Land | suitable | non-breeding |
| Forest | Subtropical/Tropical Mangrove Vegetation Above High Tide Level | suitable | breeding |
| Grassland | Subtropical/Tropical Seasonally Wet/Flooded | suitable | non-breeding |
| Grassland | Subtropical/Tropical Seasonally Wet/Flooded | suitable | breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | major | non-breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | major | breeding |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | suitable | non-breeding |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | suitable | breeding |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | breeding |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | non-breeding |
| Altitude | 0 - 1500 m | Occasional altitudinal limits |
| Purpose | Primary form used | Life stage used | Source | Scale | Level | Timing |
|---|---|---|---|---|---|---|
| Food - human | - | - | - | Non-trivial | Recent | |
| Pets/display animals, horticulture | - | - | - | International | Non-trivial | Recent |
Recommended citation
BirdLife International (2023) Species factsheet: Ixobrychus sinensis. Downloaded from
http://www.birdlife.org on 05/02/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 05/02/2023.
