A heavyset duck with short, thick neck, rather large rounded head, and fairly short but heavy bill. Adult males have a large plate above the bill that creates a bulge in the forehead. Females have a graceful sloping transition between forehead and bill.
Larger than a Surf Scoter, smaller than a Common Eider.between crow and goose
- Both Sexes
- Length: 18.5-25.2 in (47-64 cm)
- Weight: 42.3-74.1 oz (1200-2100 g)