Canvasbacks are large; adults in good condition are as heavy as mallards and second in size only to the white-winged scoter among common Oregon ducks.
Drakes have a reddish head and neck; black breast, lower back and tail coverts; nearly white back, flank, and belly, and dark gray tail. The hen is grayish brown with a darker brown head, neck, breast and tailcoverts.
It is an occasional summer resident in northeast Oregon, nesting locally only at Ladd Marsh in Union County. It is an uncommon spring and fall migrant in northeastern Oregon and regular in winter and spring on the Umatilla National Wildlife Refuge complex in Morrow and Umatilla counties.