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 |
|---|---|---|
| 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 | nomadic | Forest dependency | does not normally occur in forest |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 14,000,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 93300-243000 mature individuals | poor | estimated | 2023 |
| Population trend | stable | - | suspected | - |
| Generation length | 5.8 years | - | - | - |
Population justification: The global population size is estimated at 140,001-365,000 individuals (Wetlands International 2023), which equates to 93,300-243,000 mature individuals. The overall population trend is considered to be stable over three generations (17.4 years) (Wetlands International 2023).
Trend justification: .
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Angola | extant | native | ||||
| Botswana | extant | native | ||||
| Burundi | extant | native | ||||
| Cameroon | extant | vagrant | ||||
| Congo, The Democratic Republic of the | extant | native | ||||
| Djibouti | extant | native | ||||
| Eritrea | extant | native | ||||
| Eswatini | extant | native | ||||
| Ethiopia | extant | native | ||||
| Kenya | extant | native | ||||
| Lesotho | extant | native | ||||
| Malawi | extant | native | ||||
| Mozambique | extant | native | ||||
| Namibia | extant | native | ||||
| Rwanda | extant | native | ||||
| Somalia | extant | vagrant | ||||
| South Africa | extant | native | yes | |||
| Sudan | extant | uncertain | ||||
| Tanzania | extant | native | ||||
| Uganda | extant | native | ||||
| Zambia | extant | native | ||||
| Zimbabwe | extant | native |
| Country/Territory | IBA Name |
|---|---|
| South Africa | Barberspan and Leeupan |
| South Africa | De Hoop Nature Reserve |
| South Africa | Grasslands |
| South Africa | Upper Orange River |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Aquatic & Marine | Artificial/Aquatic - Salt Exploitation Sites | suitable | resident |
| Artificial/Aquatic & Marine | Artificial/Aquatic - Wastewater Treatment Areas | suitable | resident |
| Artificial/Aquatic & Marine | Artificial/Aquatic - Water Storage Areas (over 8ha) | suitable | resident |
| Grassland | Subtropical/Tropical Seasonally Wet/Flooded | suitable | resident |
| Marine Coastal/Supratidal | Coastal Brackish/Saline Lagoons/Marine Lakes | suitable | resident |
| Marine Neritic | Estuaries | suitable | resident |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | suitable | resident |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | suitable | resident |
| Wetlands (inland) | Permanent Freshwater Marshes/Pools (under 8ha) | suitable | resident |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | resident |
| Wetlands (inland) | Permanent Saline, Brackish or Alkaline Lakes | suitable | resident |
| Wetlands (inland) | Permanent Saline, Brackish or Alkaline Marshes/Pools | suitable | resident |
| Wetlands (inland) | Seasonal/Intermittent Freshwater Lakes (over 8ha) | suitable | resident |
| Wetlands (inland) | Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha) | suitable | resident |
| Wetlands (inland) | Seasonal/Intermittent Saline, Brackish or Alkaline Lakes and Flats | suitable | resident |
| Wetlands (inland) | Seasonal/Intermittent Saline, Brackish or Alkaline Marshes/Pools | suitable | resident |
| Altitude | 0 - 3890 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Anas platyrhynchos | Timing | Scope | Severity | Impact | ||||
| Future | Majority (50-90%) | No decline | Low Impact: 3 | ||||||
|
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Clostridium botulinum | Timing | Scope | Severity | Impact | ||||
| Future | Minority (<50%) | Rapid Declines | Low Impact: 4 | ||||||
|
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| Pollution | Domestic & urban waste water - Type Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Purpose | Scale |
|---|---|
| Food - human | subsistence, national |
| Other household goods | subsistence, national |
| Pets/display animals, horticulture | international |
| Sport hunting/specimen collecting | subsistence, national |
Recommended citation
BirdLife International (2024) Species factsheet: Yellow-billed Duck Anas undulata. Downloaded from
https://datazone.birdlife.org/species/factsheet/yellow-billed-duck-anas-undulata on 23/12/2024.
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 23/12/2024.