Hello folks. We supposedly got a bunch of Barred Rock chickens this spring, but one of them looks really different from the others. She is darker, has a green sheen to her feathers, has a thinner shape, and different color legs that are not yellow but more greyish/pinkish. You can see in the photo where she is standing with a Barred Rocks, just how much darker she is. Any ideas what she is? She just started laying some lovely brown eggs for us. Thank you for your help!