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Canvasback:
The Canvasback gets it name from the light gray canvas-colored back of the male. The Canvasback gets its scientific name Aythya valisineria from Vallisneria americana, or wild celery, which is its preferred food during the non-breeding season.
In 1897, the American Ornithologists' Union called the Canvasback the "Canvas-back". In their publiction "The Auk" (Vol.XIV), they wrote: "Known as Canard Cheval, because of the sloping head."
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Westmoreland Park, Portland, Oregon ...
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Click image to enlarge
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Canvasback, male, Westmoreland Park, Portland, Oregon.
Image taken January 1, 2012.
Canon EOS 7d, 400mm.
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Click image to enlarge
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Canvasback, male, Westmoreland Park, Portland, Oregon.
Image taken January 1, 2012.
Canon EOS 7d, 400mm.
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Click image to enlarge
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Canvasback, male, Westmoreland Park, Portland, Oregon.
Image taken January 1, 2012.
Canon EOS 7d, 400mm.
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Click image to enlarge
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Canvasback, male, Westmoreland Park, Portland, Oregon.
Image taken January 1, 2012.
Canon EOS 7d, 400mm.
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Click image to enlarge
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Canvasback, male, Westmoreland Park, Portland, Oregon.
Image taken January 1, 2012.
Canon EOS 7d, 400mm.
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Click image to enlarge
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Canvasback, male, Westmoreland Park, Portland, Oregon.
Image taken January 1, 2012.
Canon EOS 7d, 400mm.
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Force Lake, Portland, Oregon ...
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Click image to enlarge
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Canvasback, female, Force Lake, Portland, Oregon.
Image taken October 24, 2010.
Canon EOS 7d, 400mm.
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Click image to enlarge
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Canvasback, female, Force Lake, Portland, Oregon.
Image taken October 24, 2010.
Canon EOS 7d, 400mm.
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Ridgefield NWR, Washington ...
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