しろカツオドリだったら
白カツオドリだったら
shirokatsuodoridattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of しろカツオドリ

1. If/when [it] were a white-winged shearwater:; If [it] were a white-winged shearwater.

Tara Conditional
Usually Written in Kana