Hi, we have 2 rhode island reds, and a silver wynadote, and recently we have found one of our rhode island reds has pulled out neck feathers and we don't know why. We think it may have been our wynadote because she has had history of attacking our brooding hen. She's the only one who has this so we think it's not molting. There is a picture below of her right now and please reply if you know what this might be. P.S. we don't have roosters so it's not them doing it.