These hens are sisters, about 7 years old and up until about 3 months ago looked so identical I could barely tell them apart. Now, one of my hen's feathers are totally changing color, and she's looking more and more like the rooster I used to have, her father. Has anyone ever seen this and if so, any explanation for why this is happening? I've heard of a hen taking on the characteristics of a rooster, but she's actually the more submissive of the two. Thanks for any feedback!