せぐろせきれいじゃなかったです
背黒鶺鴒じゃなかったです
seguro sekireijanakattadesu

Noun
Desu Copula

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

1. Wasn't a cuckoo.; Wasn't black-backed.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana