I just got two chicks from the feed store yesterday. I have never had chickens before and am getting these guys a new home. One of them keeps pecking at her skin on her neck and by her wings. The skin is very red. She has also had diarrhea a couple times (I don't know if that's normal). She loves being held and chasing her sister around, so it hasn't affected her behavior. Is it just her feathers coming in and I'm worrying over nothing?