Steve Gettle / Canvasback (Aythya valisineria) male in breeding plumage, Saginaw Bay, Michigan

Steve Gettle / Canvasback (Aythya valisineria) duck drake paddling, Michigan

David Welling / Canvasback ducks {Aythya valisineria} resting together, Alaska, USA

Tom Vezo / Flock of Canvasback duck (Aythya valisineria) roosting on water, Long Island, New York, USA

Donald M. Jones / Canvasback (Aythya valisineria) spring courtship flight, central Montana

Donald M. Jones / Canvasback (Aythya valisineria) spring courtship flight, central Montana

Gerrit Vyn / Canvasback Duck (Aythya valisineria) male on a prairie pond. Alberta, Canada. May.

LYNN M. STONE / Canvasback Duck (Aythya valisineria) head portrait of male; captive.

LYNN M. STONE / Canvasback duck (Aythya valisineria) male on water, captive. North America

Michael Quinton / Canvasback (Aythya valisineria) drake, Alaska

Donald M. Jones / Canvasback (Aythya valisineria) flock flying during spring migration, central Montana

David Kjaer / Canvasback duck (Aythya valisineria) female, Captive, UK, from North America

David Kjaer / Canvasback duck (Aythya valisineria) Male, Captive, UK, from North America

David Kjaer / Canvasback duck (Aythya valisineria) Male, Captive, UK, from North America

Roger Powell / Canvasback pair (Aytha valisineria) swimming together, Washington WWT, Tyne & Wear, UK.

Rolf Nussbaumer / Male Canvasback (Aythya valisineria) preening, Rockport, Texas, USA. December 2003

Rolf Nussbaumer / Male Canvasback (Aythya valisineria) Rockport, Texas, USA. December 2003

Rod Williams / Canvasback duck {Aythya valisineria} male with female behind, captive, from North America

Barrie Britton / Canvasback duck (Aythya valisineria) female camouflaged on nest in reed bed, Canada

Tom Vezo / Canvasback duck {Aythya valisineria} resting, Long Island, NY, USA.

Tom Vezo / Canvasback duck (Aythya valisineria) male resting on water, Long Island, New York, USA

Tom Vezo / Canvasback (Aythya valisineria) duck, flock coming in to land, sunrise, Long Island, New York

Jim Brandenburg / Canvasback (Aythya valisineria) duck diving underwater in search of food, North America

Terry Andrewartha / Canvasback duck {Aythya valisineria} on water, UK