Netta rufina (Pallas, 1773) · hrdzavka potápavá · Red-crested Pochard

Distribution

It breeds in a scattered range from southern and central Europe to central Asia. Some populations move south for winter, while others remain closer to their breeding areas. In Slovakia it is a scarce and local breeder, especially in the west, and a regular passage visitor. It can also winter on suitable ice-free waters.

Habitat

It favours ponds, lakes and gravel pits with abundant aquatic vegetation and open water. Breeding also requires sheltered banks or small islands. In Slovakia it can be seen on larger reservoirs and the Danube, often in mixed groups with other diving ducks.

Breeding

The nest is placed in dense bankside vegetation, sometimes on an island. The female incubates and leads the ducklings. Submerged vegetation and quiet margins remain important even where adults appear relatively unobtrusive on open water.

Food

It feeds mainly on aquatic plants, shoots and seeds, supplemented by invertebrates. It obtains food by diving, but also by dipping its head or upending.

Interesting fact

Being a diving duck does not mean it must submerge completely for every mouthful. In shallow water it may collect vegetation much like a dabbling duck, adjusting its feeding method to the depth of the available food.

Sources: Slovak Wikipedia · English Wikipedia · BTO BirdFacts