To try to make a long story short, I have one barred rock hen who is fully feathered and is the culprit of my other 29 hens of being picked to bare backs is frustrating me to no end. These 15 hens are my younger flock that were cooped up until they were old enough and big enough to be put with my older flock. They were in an older coop that was hard to catch them when they started the feather picking for me to nip it in the bud. That old coop has now been destroyed. I have all 30 hens and 1 roo in a large new coop and run. Their run is made of 2 of the largest dog kennel opened up with netting on the top to keep them from flying out. The hen house is attached onto my husband's shop lean to. They have plenty of ample room to roam out and I have been feeding my flock scratch mixed with Black Oil Sunflower seeds and a lot of garden scraps etc...... I feed them layer feed as well and put apple cider in their drinking water, and this hen is still picking all their feathers off! un Anybody got any other suggestions as to what I can do about this problem?