Ahh shoot I was really hoping I was wrong ... And yes the bottoms of its feet are yellow
Black Jersey Giants, which are slow to mature, will eventually pass Black Australorps in size and weight, but otherwise the only sure way to tell them apart is by the colors of the bottoms of their feet (obvious yellow = Jersey Giant; whitish/grayish/pinkish = Australorp).My gosh. My two look nearly identical.