biology daily - the biology and biochemistry encyclopedia
biology daily articles and research Encyclopedia Dictionary Forums biology research links Weblinks Pictures Articles Blogs Newsletter

Tufted Duck

Tufted Duck
Male Tufted Duck
:Animalia
:Chordata
:Aves
:Anseriformes
:Anatidae
:Aythya
:fuligula
Binomial name
Aythya fuligula
(Linnaeus, 1758)

The Tufted Duck (Aythya fuligula) is a medium-sized diving duck. It breeds widely throughout temperate and northern Eurasia, and occurs as a rare visitor in North America. It is believed to have expanded its traditional range with the increased availability of open water due to gravel extraction, and the spread of freshwater mussels, a favourite food. The population of this abundant duck is probably close to one million birds.

These ducks are migratory in most of their range, and winter in the milder south and west of Europe and southern Asia. They will form large flocks on open water in winter.

The adult male is all black except for white flanks and a blue-grey bill. It has an obvious head tuft that gives the species its name. The only drake duck which is at all similar is the North American Ring-necked Duck, which however has a different head shape, no tuft and greyish flanks.

The adult female is brown with paler flanks, and is more easily confused with other diving ducks. In particular, some have white around the bill base which resembles the scaup species, although the white is never as extensive as in those ducks.

Their breeding habitat is close to marshes and lakes with plenty of vegetation to conceal the nest.

These birds feed mainly by diving, but they will dabble. They eat molluscs, aquatic insects and some plants and sometimes feed at night.

Female Tufted Duck
Enlarge
Female Tufted Duck



07-14-2008 23:18:10
The contents of this article are licensed from Wikipedia.org under the GNU Free Documentation License. How to see transparent copy
BiologyDaily.com 2005. Legal info   Privacy