kuifeend tufted duck aythya fuligula

By the white flanks on an otherwise black plumage, the male tufted duck a striking bird. The female is dark brown plumage with a less conspicuous. When the male is clearly a black tuft of drooping feathers visible when the female is considerably shorter this crest. Tufted duck is easy to be confused at first sight with the stopper. Although the female tufted duck sometimes has a white spot round the beak base, lacking the broad white ring that is always present in the female of the topper. To distinguish male tufted duck is because the crest at the top is missing and because the top is gray instead of black back.