mutation?

I have a 7 week old olive egger, she's a lovely lavender grey color but she has come up with red blotches on her wing-feathers and the back of her head. The feathers look completely healthy, the red doesn't wash off, she's acting normal, and the skin is not irritated. I'm fairly sure it isn't...

I hatched a lot of eggs from my mixed flock of chickens over the summer, one of the chickens I hatched is a dark Brahma rooster. He hatched from a dark Brahma egg and I’m positive he came from the dark Brahma rooster, the only other Roos were a golden laced polish and an old English Wheaton...