Order: Anseriformes
Family: Anatidae
Aythya fuligula
Tufted Duck

Size: 43 cm
Habitat
They are very scarce. They are a hibernating species, and they can be seen in wetlands and dams in the centre and the south of the Iberian Peninsula.
Females are browner-coloured, while males are black-and-white with a black head and a neat crest which gives it the name of tufted duck.They can be seen between October and February in lagoons as well as by the edge of hollows.