Smew vs. Smee — Which is Correct Spelling?

The smew (Mergellus albellus) is a species of duck, and is the only living member of the genus Mergellus. Mergellus is a diminutive of Mergus and albellus is from Latin albus "white".

A small Eurasian diving duck (Mergellus albellus), the male of which has white and black plumage and a white crest.

A small compact diving duck, Mergus albellus, that breeds in the northern taiga of Europe and Asia and winters on sheltered coasts or inland lakes.

Small European merganser (Mergus albellus) which has a white crest; - called also smee, smee duck, white merganser, and white nun.

Smallest merganser and most expert diver; found in northern Eurasia