あたまくろけいかんけりであれば
頭黒鶏冠鳧であれば
atamakurokeikankerideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of ずぐろとさかげり

1. If it were a black-headed chicken-crested duck:; If it is a black-headed chicken-crested duck:

Ba Conditional
Usually Written in Kana