Family Ducks, Geese, Swans (Anatidae)

Least Concern

Yellow-billed Duck (Anas undulata)


Taxonomy

French: Canard à bec jaune German: Gelbschnabelente Spanish: Ánade picolimón
Other common names: African Yellow-billed Duck
Taxonomy:

Anas undulata

C. F. Dubois

, 1839,

Cape of Good Hope, South Africa

.

Traditionally thought to be closely related to A. melleri, A. platyrhynchos and A. rubripes. Has been linked to A. melleri, the two constituting the infragenus Afranus#R. Race ruppelli sometimes spelt rueppelli, but latter emendation of original is not justified. Two subspecies recognized.

Subspecies and Distribution
  • A. u. ruppelli Blyth, 1855 – South Sudan, Eritrea, Ethiopia, Uganda (no recent records#R) and N Kenya.
  • A. u. undulata C. F. Dubois, 1839 – Kenya SW to Angola and N Botswana and S to Western Cape Province (South Africa).
  • Also (race unknown) E Nigeria and NC Cameroon.

    Descriptive notes

    51–63 cm; male 533–1310 g, female 600–1123 g. Slightly bulbous-looking head and long, slender neck darker than body, while pale fringes to grey feathers... read more

    Voice

    Typical A. platyrhynchos-like vocalizations, but “raeb” call of male is more whistle-like... read more

    Habitat

    Freshwater lakes, reservoirs with marginal vegetation, flooded fields, swamps and marshes, slow-... read more

    Food and feeding

    Seeds, roots, leaves and stems of both aquatic (Potamogeton) and terrestrial plants; also animal matter, mainly insects and their... read more

    Breeding

    Season variable, generally coincides with beginning of rains; Jul–Sept in Ethiopia, Jan, Apr–Jul in Kenya, Jun–Jul in... read more

    Movements

    Mostly sedentary, with generally only small-scale, dispersive movements on record, mainly between... read more

    Status and conservation

    Not globally threatened (Least Concern). Common and widespread; most abundant duck in many parts of its range, especially in temperate regions, and capable of colonizing new... read more

    Recommended citation

    Carboneras, C. & Kirwan, G.M. (2017). Yellow-billed Duck (Anas undulata). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52878 on 15 December 2017).