We got 16 chickens at the end of October. The order was for 15 but we got an extra. We have determined which one is the extra by elimination as the chicks got feathers, but we are not exactly sure if we are right. The chick in question is all white. No markings, nothing special. I have joked that it is a "chicken house chicken" (a broiler that is grown in a chicken house for Tyson, Mountaire, etc.) Please help us identify our chicken. Thanks.