Hey, my 1 year old Wyandotte has been getting very skinny, and losing a decent amount of feathers around her neck. It snowed here, so they usually don't come out, even when the door is open. I don't think its molting, since my other chickens seem fine. She has been in the coop about a week, with the door closed. We had people take care of her while we were on vacation, and we told them to not let them out due to the snow. She was fine before we left, I don't have a picture before and after for observation, but I will post a photo of what she looks like now.