South African Shelduck

The South African shelduck, also known as the Cape shelduck, is a robust bird with a distinctive appearance. Adult males are characterized by their grey heads, while females boast a contrasting white face with a black crown, nape, and neck sides. The plumage of both sexes is a rich ruddy color, adorned with wings that are strikingly marked with black, white, and green. These birds measure approximately 64 cm (25 inches) in length.

Identification Tips

When observing the South African shelduck, look for the sexual dimorphism in head coloration: males with grey heads and females with white faces and black markings. The variability in the female's head color can be a helpful clue. In flight, they may be confused with Egyptian geese, but the shelduck's unique color pattern can aid in correct identification. Juveniles appear duller and young females lack the white on the head, save for white eye circles.

Habitat

This species is commonly found in association with lakes and rivers, preferring fairly open country. They are known to breed in disused mammal holes, with a particular fondness for those created by aardvarks.

Distribution

The South African shelduck is native to southern Africa, with a breeding range primarily in Namibia and South Africa. During the austral winter, many individuals migrate north-east to favored moulting grounds, where they can be found in significant numbers.

Behaviour

Outside of the breeding season, pairs of South African shelducks exhibit nomadic tendencies, often moving across their range. Their breeding behavior includes utilizing abandoned burrows for nesting.

Song & Calls

The vocalizations of the South African shelduck are sexually dimorphic. Males emit a deep honk or 'hoogh' call, while females produce a louder and sharper 'hark'.

Similar Species

When identifying the South African shelduck, one may need to differentiate it from the Egyptian goose, which can appear similar in flight.

Diet and Feeding

The South African shelduck typically feed on a variety of aquatic plants, small invertebrates, and possibly grains.

Conservation status

The IUCN Red List classifies the South African shelduck as Least Concern, indicating that, currently, there are no immediate threats to its population numbers.