greater scaup

variants: or greater scaup duck

Definition of greater scaup

: a North American diving duck (Aythya marila nearctica) resembling the lesser scaup duck but being slightly larger and having a greenish iridescence on the head of the adult male, breeding in arctic northwestern America, and wintering on both coasts of North America

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Cite this Entry

“Greater scaup.” Dictionary, Merriam-Webster, Accessed 2 Dec. 2021.

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