Canvasback, Aythya valisineria, female, Cheseapeake Bay, Maryland

Canvasback, Aythya valisineria, female, Cheseapeake Bay, Maryland

Filename

Canvasback_20160213-150026_DSC0738.jpg

Copyright

David Stimac

Image Size

7360x4912 / 19.1MB

Canvasback Aythya valisineria Cheseapeake Bay Maryland Choptank duck female hen testosterone estrogen hormone age old diving pochard winter

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Waterfowl Archive