せぐろせきれいでわありませんでした
背黒鶺鴒ではありませんでした
seguro sekireidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of せぐろせきれい

1. Was not a black paradise flycatcher.; Was not a dark-colored paradise flycatcher.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana