Data Zone
Taxonomic note
Radjah radjah (del Hoyo and Collar 2014) was previously placed in the genus Tadorna.
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 | low |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 9,010,000 km2 | |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 13300-133000 mature individuals | poor | estimated | 2023 |
| Population trend | decreasing | - | suspected | - |
| Generation length | 7.67 years | - | - | - |
Population justification: The global population size is estimated at 20,000-200,000 individuals (Wetlands International 2023), which equates to 13,300-133,000 mature individuals. The overall population trend is considered to be decreasing over three generations (23.01 years) (Wetlands International 2023).
Trend justification: .
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Australia | extant | native | yes | |||
| Indonesia | extant | native | yes | |||
| Papua New Guinea | extant | native | yes | |||
| Timor-Leste | extant | vagrant | yes |
| Country/Territory | IBA Name |
|---|---|
| Australia | Alligator Rivers Floodplains |
| Australia | Arafura Swamp |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Mangrove Vegetation Above High Tide Level | suitable | resident |
| Grassland | Subtropical/Tropical Seasonally Wet/Flooded | suitable | breeding |
| Marine Intertidal | Mud Flats and Salt Flats | suitable | resident |
| Marine Neritic | Estuaries | suitable | resident |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | resident |
| Altitude | 0 - 150 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
| Future | Minority (<50%) | Unknown | Unknown | ||||||
|
|||||||||
| Purpose | Scale |
|---|---|
| Food - human | subsistence, national |
| Pets/display animals, horticulture | international |
| Sport hunting/specimen collecting | subsistence, national |
Recommended citation
BirdLife International (2024) Species factsheet: Radjah Shelduck Radjah radjah. Downloaded from
https://datazone.birdlife.org/species/factsheet/radjah-shelduck-radjah-radjah on 24/11/2024.
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 24/11/2024.