Smew

Identification

The smew is a small diving duck, measuring 38–44 cm in length with a wingspan of 56–69 cm and weighing 450–650 g. Adult males are unmistakable, displaying a striking black-and-white "cracked ice" or "panda" appearance that makes them very obvious in flight, with distinctive oval white wing-patches. Females and immature males are quite different, appearing predominantly grey with a chestnut forehead and crown, white chin and cheeks, and black lores—earning them the colloquial name "redhead" smew. Young males acquire their adult plumage late in their first winter at around 8–10 months old. The smew's bill is notably hooked at the tip with serrated edges, specialized adaptations for catching fish when diving.

Range & Habitat

The smew breeds across the Palearctic in the northern taiga, ranging from northern Scandinavia east to Chukotka, requiring wooded areas for nesting. This migratory species winters on sheltered coasts and inland lakes across a vast range: in Europe, it frequents the Baltic Sea, Black Sea, northern Germany, the Low Countries, and Great Britain (predominantly in southeast England, with some birds reaching Scotland); in Asia, it winters on the Caspian Sea, in eastern China, Korea, and Japan, with smaller numbers reaching northern India. The species favors fish-rich lakes and slow rivers, preferring areas around lake edges, often beneath small trees. Vagrants occasionally appear in northern Africa and North America, with regular sightings in the Aleutian Islands.

Behaviour & Diet

The smew is a diving duck that feeds primarily on fish, using its specialized serrated bill to grasp slippery prey. It is notably shy and flushes easily when disturbed, making it a wary bird to approach. The species breeds in May, nesting in tree holes such as abandoned woodpecker cavities—an unusual adaptation among ducks. Females lay 7–11 cream-colored eggs, which they incubate alone for 26–28 days. Ducklings are precocial, leaving the nest shortly after hatching and becoming airborne within approximately ten weeks.

Best Time & Places to See It

Winter is the prime season for observing smew in most of Europe, particularly from November through March when birds congregate on their wintering grounds. In Europe, the Baltic Sea, Black Sea region, and northern Germany offer reliable viewing opportunities, while in Great Britain, southeast England is the most consistent location, though Scottish sightings do occur. During breeding season (May), smew occupy remote northern taiga regions, making them difficult to access for most birdwatchers. Asian observers should focus on wintering sites including the Caspian Sea, eastern China, Korea, and Japan.

Photography Tips

Male smew in breeding plumage are highly photogenic subjects, with their bold black-and-white patterns providing excellent contrast in photographs. However, their shy nature demands patient stalking and a long lens—approach slowly and avoid sudden movements to prevent them flushing. Early morning and late afternoon light enhances the contrast of male plumage and catches the distinctive white wing-patches in flight. Photographing females and immature birds requires careful attention to their grey and chestnut markings. Winter flocks on open water present good opportunities for flight photography, capturing the characteristic white wing-patches that are diagnostic for identification.