悦えっ哉さい

noun

Japanese sparrowhawk (male); musket

Ornithological term for the male of the Japanese sparrowhawk (Accipiter gularis). The female is called 雀鷂 (つみ). Rare in everyday conversation; mainly used in birdwatching or specialized contexts.

See also: ツミ

• バードウォッチング中ちゅうにエッサイを見みつけた。

  I spotted a male Japanese sparrowhawk while birdwatching.