さんこうとりじゃなかったです
三光鳥じゃなかったです
sankōtorijanakattadesu

Noun
Desu Copula

The polite, past negative form of さんこうちょう

1. Wasn't a three-light bird.; Wasn't a mythical bird.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana