So we have a flock of 6 that we have had for two years. They have all been great with eachotber since day one, they have their pecking order and have never had a problem with them. All hens. We came home from a few day vacation to one hen with half her feathers missing. Feathers all over more than molting season. We wondered if she was having just a horrible molt, until we saw another hen plucking her feathers off!!! Any suggestions as to why a hen would all of a sudden pluck half the feathers off another!? And what to do with the poor gal with half missing?