みずなぎとりじゃなかったです
水薙鳥じゃなかったです
mizunagitorijanakattadesu

Noun
Desu Copula

The polite, past negative form of みずなぎどり

1. Was not a frigatebird.; Wasn't a frigatebird.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana