My husband takes care of our flock, as I am gone during the day. However, after the time change, I looked in the run and noticed that something is not quite right with two of our chickens. The Barred Rock head has lost feathers, and the Easter Egger has something strange on her neck. Can anyone help to identify the issue? We use deep litter in the coop and will clean it out within the next few weeks. We are new to chickens (first year), so all help is appreciated. Thanks!