I was not careful enough when trying to introduce 5wks chicks to an established all-female flock. The one female chick got pecked on so badly she lost most of her head/neck feathers and the skin was cut in two places. So I've isolated it, disinfected the wounds, and am waiting for it to "look" normal before I put it back in the brooder. Two days later, is eating and drinking, but every so often it ducks its head in and pushes backwards. Is it trying to rub the sore area or is this some kind of submission behaviour?