I had a similar problem. I had one hen that had that fifty cent piece of missing feathers. Someone on here told me to up their protein in the feed. I was feeding 16% and was told to buy 20% and mix it in half and half. This brought up the protein to 18%. Whoever was picking stopped and none of my hens are peckers/feather eaters. I know you are already feeding 17% but maybe that 1% will make a difference.
Another thing you can do is put on peepers. You can get them from Randall Burke. Put them on 24/7 for 6 weeks. You need to put them on all your hens. Don't worry they can still drink and eat. This should break the behaviour.
Mary
Another thing you can do is put on peepers. You can get them from Randall Burke. Put them on 24/7 for 6 weeks. You need to put them on all your hens. Don't worry they can still drink and eat. This should break the behaviour.
Mary