Lots of people get a bit freaked out by the "Giant' part, because they thought they had Australorps. Then you tell them that they instead have Jersey Giants, and they get worried that the hens are going to be too big to be good layers and that they will eat too much. It's seems like there always...
She looks like either an Australorp or a black Jersey Giant, depending on the color of the bottoms of her feet. Australorps have white/grey skin on the bottoms of their feet. Giants have yellow.