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Yellow-billed Duck Anas undulata

IUCN Red List history

Year Category
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

Species attributes

Migratory status nomadic Forest dependency Does not normally occur in forest
Land mass type   Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 8,460,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals poor Estimated 2009
Population trend Stable -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 7.2 - - -
Trend justification: The overall population trend is stable, although some populations have unknown trends (Wetlands International 2006).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Angola Native Extant        
Botswana Native Extant        
Burundi Native Extant        
Cameroon Vagrant Extant        
Congo, The Democratic Republic of the Native Extant        
Djibouti Native Extant        
Eritrea Native Extant        
Ethiopia Native Extant        
Kenya Native Extant        
Lesotho Native Extant        
Malawi Native Extant        
Mozambique Native Extant        
Namibia Native Extant        
Rwanda Native Extant        
Somalia Vagrant Extant        
South Africa Native Extant Yes      
Sudan Unknown Extant        
Swaziland Native Extant        
Tanzania Native Extant        
Uganda Native Extant        
Zambia Native Extant        
Zimbabwe Native Extant        

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
South Africa Barberspan and Leeupan site factsheet
South Africa De Hoop Nature Reserve site factsheet
South Africa Grasslands site factsheet
South Africa Lake St Lucia and Mkuze Swamps site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Aquatic & Marine Salt Exploitation Sites suitable resident
Artificial/Aquatic & Marine Wastewater Treatment Areas suitable resident
Artificial/Aquatic & Marine 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  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Mallard (Anas platyrhynchos) Timing Scope Severity Impact
Future Majority (50-90%) No decline Low Impact: 3
Stresses
Hybridisation
Invasive and other problematic species, genes & diseases Viral/prion-induced diseases / Avian Botulism (Clostridium botulinum) Timing Scope Severity Impact
Future Minority (<50%) Rapid Declines Low Impact: 4
Stresses
Species mortality
Pollution Domestic & urban waste water / Type Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation

Utilisation

Purpose Primary form used Life stage used Source Scale Level Timing
Food (human) Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent
Pets Whole Adults and juveniles Wild International Non-trivial Recent
Sport Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent
Handicrafts, jewellery, decorations, curios Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent

Recommended citation
BirdLife International (2014) Species factsheet: Anas undulata. Downloaded from http://www.birdlife.org on 22/08/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 22/08/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Least Concern
Family Anatidae (Ducks, Geese, Swans)
Species name author Dubois, 1839
Population size mature individuals
Population trend Stable
Distribution size (breeding/resident) 8,460,000 km2
Country endemic? No
Links to further information
- Summary information on this species
- Projected distributions under climate change