indigo finch(n = noun.animal) indigo bird, indigo bunting, passerina cyanea - small deep blue North American bunting;
is a kind of bunting
is a member of genus passerina, passerina

bastard indigo, blue false indigo, eastern indigo snake, false indigo, finch, grass finch, house finch, indigo, indigo bird, indigo broom, indigo bunting, indigo plant, indigo snake, indigo squill, java finch, pine finch, purple finch, vida finch, weaver finch, white false indigo, whydah finch, wild indigo, zebra finch