garganey
A small dabbling duck (Anas querquedula). The name is usually written in katakana as シマアジ.
The garganey is seen as a passage migrant in Japan.
Katakana spelling is standard for this bird name.
Kanji spelling is rare; the word is usually written in kana.
The name シマアジ literally means 'striped horse mackerel', but the exact origin of the bird name is uncertain.