This hen is supposed to be RIR but she is much darker in color than the other 2 that are from the same breeder. They were all purchased at the same time. The only difference as chicks was that the other two were solid colored chicks but this one had a very dark wide strip down her back. Looked like a chipmunk. She is the same size as her "sisters" but I have noticed that when the sunlight hits her, she has a greenish sheen, almost like the Australorp and a few darker tail feathers as well. At one point her feathers almost appeared to have some subtle barring but it is not noticeable now. Any ideas?