あたまくろけいかんけりなら
頭黒鶏冠鳧なら
atamakurokeikan kerinara

Noun
Da Copula

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

1. If/when [one's] head is black, [like a] chicken's crest, [and a] duck's [head]…

Nara Conditional
Usually Written in Kana