まだらフルマかもめであれば
斑フルマ鴎であれば
madarafurumakamomedeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of まだらフルマかもめ

1. If it is a common gull…; When it is a common gull…

Ba Conditional
Usually Written in Kana