1) Aythya 2) Duck 1) Aythya valisineria 2) Bird found in Europe 3) Bird native to Europe 4) Canvasback duck 5) Certain duck 6) Duck 7) Duck perched on a sail 8) Duck found in Europe 9) European bird 10) European native bird 11) European duck 12) European duck-family bird 13) European native duck 14) North American diving duck 
• (n.) A Species of duck (Aythya vallisneria), esteemed for the delicacy of its flesh. It visits the United States in autumn; particularly Chesapeake Bay and adjoining waters; -- so named from the markings of the plumage on its back.
(species Aythya valisineria), bay duck, or pochard (q.v.), of the family Anatidae, one of the most popular of game birds. The male canvasback is a ... [1 related articles]
Can'vas·back` noun (Zoology) A Species of duck ( Aythya vallisneria ), esteemed for the delicacy of its flesh. It visits the United States in autumn; particularly Chesapeake Bay and adjoining waters; -- so named from the markings of the plumage on its back. 
The canvasback (Aythya valisineria) is an American diving duck related to the pochard, but larger. The head is chestnut coloured, the back lighter, the beak long and narrow. The canvasback is a popular eating duck in America.
[n] - North American wild duck valued for sport and food
canvasback duck noun North American wild duck valued for sport and food