のどぐろちどりであれば
喉黒千鳥であれば
nodogurochidorideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of のどぐろちどり

1. If it were a black-tailed gull:; If it is a black-tailed gull:

Ba Conditional
Usually Written in Kana