がちょうじゃありませんでした
鵞鳥じゃありませんでした
gachōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of がちょう

1. Was not a magpie.; Was not a bird.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana