しろはらとうぞくかもめじゃないです
白腹盗賊鴎じゃないです
shirohara tōzokukamomejanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of しろはらとうぞくかもめ

1. It's not a white-bellied pirate gull.

Negative
Polite
Casual Register
Usually Written in Kana