白腹 しろはら盗賊 とうぞく かもめなら
shirohara tōzokukamomenara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of 白腹盗賊鴎

1. If/when it's a white-bellied skua:; When a white-bellied skua is present:

Nara Conditional