あかえりひれあしだったら
赤襟鰭足鷸だったら
akaerihireashidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of あかえりひれあししぎ

1. If it were a red-collared plover…; If it was a red-collared plover…

Tara Conditional
Usually Written in Kana