A small merganser of northern Europe and Asia. The male is mostly white with black markings. The bill is hook tipped and serrated for catching fish. The smew is 38–44 cm (15–17 in) long. Females generally resemble female Goldeneyes, but they are more slender and have white colouring on their necks extending onto their cheeks forming a sharp boundary with their reddish brown caps (pics 3-5).
Spotted at Woodland Park Zoo.