If i have mites in my coop, will they be on all the chickens or just 1? The reason I am asking is, my EE has lost all of her feathers on her back between here wings ( I think they are saddle fethers). None of the other birds have, so I am not sure what it is. I have looked at her back and dont see anything but a couple of scabs, nothing that looks like mites but I am not 100% sure. I will try to get a picture when I get home but I wanted to see what everyone thought in advance. All my hens are 14 weeks old and I have no roosters that I know of. Any help or opinions would be great.