hooded merganser
(redirected from Mergus cucullatus)Also found in: Thesaurus.
Related to Mergus cucullatus: Lophodytes cucullatus
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| Noun | 1. |  hooded merganser - small North American duck with a high circular crest on the male's headfish duck, merganser, sawbill, sheldrake - large crested fish-eating diving duck having a slender hooked bill with serrated edges genus Lophodytes, Lophodytes - a genus of Merginae |