くろあしあほうどりでしょう
黒足信天翁でしょう
kuroashiahōdorideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of くろあしあほうどり

1. Probably a wandering albatross.

Polite
Presumptive
Conjecture
Usually Written in Kana