にしおうでわありませんでした
西大鵟ではありませんでした
ni shi ōdewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of にしおおのすり

1. Was not a goshawk.; Was not the Western goshawk.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana