しろはらとうぞくかもめだろう
白腹盗賊鴎だろう
shirohara tōzokukamomedarō

Noun
Da Copula

Expresses probability ("probably…") of しろはらとうぞくかもめ

1. Probably a pale-bellied arctic skua.

Presumptive
Conjecture
Usually Written in Kana