Female Mallard wild duck (Anas platyrhynchos - "flat-billed duck").

Ruddy Shelduck (Tadorna ferruginea - known as Brahminy Duck in India) foraging, sleeping and swimming.

Common Shelduck (Tadorna tadorna) female on a lake.

Cape Shelduck or South African Shelduck (Tadorna cana), from the Anatidae family.

Domestic ducks on a lake in the Delta of Danube.

Wood Ducks or Carolina Ducks (Aix sponsa).

Mandarin Ducks (Aix galericulata) - a symbol of conjugal affection and fidelity. The drake is the one with the beautiful colored plumage. More photos than usual, but I think it's worth it.