I'll bet they're imitations. "The vendors were both right." A small body, thin leaden-gray legs and claws, and a bright red crown "are the characteristic marks of a native Taiwan chicken.
兩個雞販說得都沒錯，「體型較小、腳脛細且呈鉛色、雞冠鮮紅」都是土雞的外型特徵。