mergus merganser americanus

English Thesaurus

1. common North American diving duck considered a variety of the European goosander (noun.animal)

hypernym	:	fish duck, merganser, sawbill, sheldrake,
definition	:	large crested fish-eating diving duck having a slender hooked bill with serrated edges (noun.animal)

member meronym	:	genus mergus, mergus,
definition	:	mergansers (noun.animal)