きそくはいくろかもめであれば
黄足背黒鴎であれば
kisokuhaikurokamomedeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of きあしせぐろかもめ

1. If it were a yellow-footed gull with a black-backed gull:; If it is a yellow-footed gull with a black-backed gull:

Ba Conditional
Usually Written in Kana