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.
In winter, greater scaups come to the bay in flocks.
Katakana spelling is standard for this bird name; the kanji form 鈴鴨 is rare.
Kanji spelling is seldom used; learners will almost always encounter the katakana form.
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.