The smew is a species of duck and is the only living member of the genus Mergellus. The genus is closely related to Mergus and is sometimes included in it; genetic studies have shown that it is the sister taxon to Mergus and Lophodytes. The smew has hybridised with the common goldeneye.
Where are you looking?
Select a tracking region above to ping the eBird database and reveal live hotspots for the Smew.
Low-Light Telephoto Systems
Identifying specific features of the Smew requires high-contrast magnification. Check out the top-rated 8x42 optics.