White-headed DuckOxyura leucocephalaWhere and when to see them

The white-headed duck is a distinctive stiff-tailed waterbird of wetlands across a fragmented Eurasian and North African range. Breeding males have a white head with a dark crown and a swollen-looking blue bill. Turkey supports important populations, particularly at inland wetlands. Drainage, deteriorating water quality, hunting and hybridization with introduced ruddy ducks have contributed to conservation concern. This is primarily a lake bird, not a species to expect routinely along open marine shores.

Size

43-48 cm long

Weight

500-900 g

Lifespan

Not reliably established

Status

Endangered

White-headed ducks swim low in the water, often holding their stiff tail upward. They obtain much of their food below the surface and can remain inconspicuous among wetland vegetation. Males perform elaborate postures and displays during courtship, while females conceal nests within emergent plants. Outside breeding, birds may concentrate on favored lakes in flocks. Water depth, salinity and seasonal freezing can influence movements between breeding and wintering wetlands. White-headed ducks are known for their deep diving capabilities, often remaining submerged for extended periods while foraging. During non-breeding seasons, they are relatively social, forming rafts that can include hundreds of individuals on favored lakes.

• It belongs to the stiff-tailed duck group.
• The male's bill becomes bright blue during the breeding period.
• Hybridization with introduced ruddy ducks is a major conservation issue.
• Wintering flocks can use saline lakes that differ markedly from vegetated breeding wetlands.

Autumn and winter can be useful for viewing concentrations on Turkish inland lakes, broadly November through March. Spring and summer involve more dispersed breeding birds at suitable wetlands. Lake conditions change between years, so current counts and legal access information are more useful than fixed promises. The arrival of wintering birds from more northerly breeding grounds, such as Central Asia, can augment local populations in Turkey. Optimal viewing conditions often coincide with periods of calm weather that allow for clear observation across large water bodies.

Breeding habitat typically combines shallow open water with dense emergent vegetation, particularly in productive freshwater or mildly brackish lakes. Wintering birds may use larger, more open saline lakes. In Turkey, suitable sites are predominantly inland and can be sensitive to changing water levels. The species shows a preference for deeper sections of shallow lakes, often where dense submerged vegetation provides cover. Many significant White-headed Duck breeding and wintering sites in Turkey are protected Ramsar sites or Special Environmental Protection Areas.

Aquatic invertebrates, especially chironomid larvae, are important foods, together with seeds and other aquatic plant material. Ducks forage through soft bottom sediments to obtain concealed items. Wetland productivity and sediment conditions therefore matter as much as the visible extent of open water. Ducklings initially feed on small invertebrates and zooplankton, gradually incorporating plant material as they mature. This species can consume significant quantities of submerged aquatic plants, especially charophytes, which form extensive underwater meadows.

Common name

White-headed Duck

Scientific name

Oxyura leucocephala

Animal group

Birds

Size

43-48 cm long

Weight

500-900 g

Lifespan

Not reliably established

Status

Endangered

Identification

A breeding male has a swollen blue bill and white head with a dark crown, unlike the ruddy duck's black cap, white cheek patch and less swollen bill. Females and juveniles have a duller white face with a darker line or smudgy markings across the cheek. Their bill is greyish rather than blue, and less swollen than the breeding male's.