あかえりひれあしでしょう
赤襟鰭足鷸でしょう
akaerihireashideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of あかえりひれあししぎ

1. Probably a red-necked phalarope.

Polite
Presumptive
Conjecture
Usually Written in Kana