とうぞくかもめでしょう
盗賊鴎でしょう
tōzokukamomedeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of とうぞくかもめ

1. Probably a thief gull.

Polite
Presumptive
Conjecture
Usually Written in Kana