I just got new chickens about 45 minutes ago. They came from some guy my dad works with. A lot of them have raggedy feathers and floppy combs so I was watching them (they are being quarantined by the way) and I saw the leader (I think) pick out a feather off another one and eat it. They look way skinnier than my other chickens. I'm thinking they have bad nutrition then??? What can I do to help them not eat each other's feathers?? I'm feeding them layer feed, grit, and I threw in lots of treats. Plus I give all my chickens scratch every day to get them nice and fat for winter. Also I'm giving them a vitamin supplement in their water. I really don't want new sick chickens on my hands. Please help! Thank you.