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. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2018 | Least Concern | |
| 2016 | Least Concern | |
| 2013 | Least Concern | |
| 2012 | Least Concern | |
| 2011 | Least Concern | |
| 2008 | Not Recognised | |
| 2004 | Not Recognised | |
| 2000 | Not Recognised | |
| 1994 | Not Recognised | |
| 1988 | Not Recognised |
| Migratory status | full migrant | Forest dependency | does not normally occur in forest |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 13,200,000 km2 | |
| Extent of Occurrence (non-breeding) | 5,300,000 km2 | |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | good | estimated | 1999 |
| Population trend | decreasing | - | suspected | - |
| Generation length | 6.6 years | - | - | - |
Population justification: The population is estimated to number between 0.8-1.6 million individuals in total.
Trend justification: The population is suspected to be decreasing at an unquantified rate, but the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Bhutan | extant | native | yes | |||
| China (mainland) | extant | native | yes | |||
| Hong Kong (China) | extant | native | yes | |||
| Japan | extant | native | yes | |||
| Mongolia | extant | native | yes | |||
| North Korea | extant | native | yes | |||
| Russia | extant | native | yes | |||
| Russia (Asian) | extant | native | yes | |||
| South Korea | extant | native | yes | |||
| Taiwan, China | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| South Korea | Cheonsu Bay |
| South Korea | Dongjin estuary |
| South Korea | Gangjin Bay |
| South Korea | Geum-gang river and estuary |
| South Korea | Geumho-ho lake |
| South Korea | Han-gang estuary |
| South Korea | Junam reservoir |
| South Korea | Sihwa-ho lake |
| South Korea | Tidal flat area of southern Ganghwa-do island |
| South Korea | Yeongam-ho lake |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Aquatic & Marine | Artificial/Aquatic - Seasonally Flooded Agricultural Land | suitable | non-breeding |
| Artificial/Aquatic & Marine | Artificial/Aquatic - Seasonally Flooded Agricultural Land | suitable | breeding |
| Artificial/Terrestrial | Arable Land | suitable | non-breeding |
| Artificial/Terrestrial | Arable Land | suitable | breeding |
| Marine Coastal/Supratidal | Coastal Brackish/Saline Lagoons/Marine Lakes | suitable | non-breeding |
| Marine Coastal/Supratidal | Coastal Brackish/Saline Lagoons/Marine Lakes | suitable | breeding |
| Wetlands (inland) | Permanent Freshwater Marshes/Pools (under 8ha) | suitable | non-breeding |
| Wetlands (inland) | Permanent Freshwater Marshes/Pools (under 8ha) | suitable | breeding |
| Wetlands (inland) | Seasonal/Intermittent Freshwater Lakes (over 8ha) | suitable | non-breeding |
| Wetlands (inland) | Seasonal/Intermittent Freshwater Lakes (over 8ha) | suitable | breeding |
| Altitude | Occasional altitudinal limits |
Recommended citation
BirdLife International (2024) Species factsheet: Eastern Spot-billed Duck Anas zonorhyncha. Downloaded from
https://datazone.birdlife.org/species/factsheet/eastern-spot-billed-duck-anas-zonorhyncha on 23/11/2024.
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 23/11/2024.