だいこくむくどりぎじゃなかった
大黒椋鳥擬じゃなかった
daikokumukudorigijanakatta

Noun
Da Copula

The past negative form of おおくろむくどりもどき

1. Wasn't pretending to be a Great Black Woodpecker.

Past/Perfective
Negative
Usually Written in Kana