noun
greater scaup
A diving duck (Aythya marila) found in coastal waters and large lakes; the name is usually written in katakana as スズガモ.
冬になると、スズガモが湾に群れでやってくる。
In winter, greater scaups come to the bay in flocks.
Tufted duck (Aythya fuligula), a similar diving duck often seen alongside the greater scaup; the male has a tufted crest.
The name スズガモ (鈴鴨) literally means 'bell duck', possibly from the male's ringing call or the bell-like shape of its head, but the exact origin is uncertain.