さよなきどりさよなきどりMeanings1nounnightingale; common nightingaleusually written using kana aloneRefers specifically to the common nightingale (Luscinia megarhynchos). Often written in katakana as サヨナキドリ. Compare with ナイチンゲール, which is the more common loanword for 'nightingale' in modern Japanese.See also: ナイチンゲールサヨナキドリ