蝦夷 えぞ雷鳥 らいちょうじゃありませんでした
ezo raichōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 蝦夷雷鳥

1. Was not a rock ptarmigan.; Was not an Ezo ptarmigan.

Past/Perfective
Negative
Polite
Terminal Form