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Related to Aythya valisineria: canvasback duck


see duckduck,
common name for wild and domestic waterfowl of the family Anatidae, which also includes geese and swans. It is hunted and bred for its meat, eggs, and feathers. Strictly speaking, duck refers to the female and drake to the male.
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MC3 had the highest numbers of Mallard, Gadwall (Arias strepera), Blue-winged Teal (Anas discors), Northern Shoveler (indicator for the cluster, P = 0.022), Redhead (Aythya americana; indicator for the cluster, P = 0.048), Canvasback (Aythya valisineria), Bufflehead, and Ruddy Duck (Table 3).
Hydrilla control on Lake Wales, Florida, led to reduced ring-necked duck (Aythya collaris) and canvasback (Aythya valisineria) use of the lake (6).
Canvasback Aythya valisineria. Extirpated as a winter resident; two modern records of singles at PdR on 12 Jan.