I have read all the posts I can find on the topic of feather picking and gathered lots of good advice, but I still have some questions. I have 5 hens (2 adults and 3 6-month-old pullets) that live in an enclosed 10x16 run with a 5x4 coop. They are allowed out to free roam whenever we are home. They eat Layena crumbles (the younger ones just transitioned to the layer from the starter) and they get treats (watermelon, cantelope, corn on the cob, cabbage, etc.) to entertain them during the day. There are two feeders, so there is no competition for food. Over the past 3 weeks I've noticed that my 6 month old Australorp has been having her feathers on her neck broken off or plucked out. Now my 6 month SLW is starting to lose her neck feathers too. I caught the culprit, the 6 month Orpington, plucking both of the others feathers on multiple occasions this weekend. She leaves the older hens alone and they leave all the younger ones alone. This Orpington (Pearl is her name) has had some issues from the start. She has never been able to accurately pick something up with her beak. Her depth perception or something is rather off. She has formed a habit of staring at things and then (rather violently) pecking at them. She seems to always be pecking things and now she has started on her sisters. She doesn't eat the feathers, just breaks them off. I don't know what to do because it has become such a habit of hers and she will peck anything. I really don't think she is bored because I've only seen her do it when they are out roaming our huge backyard. I'm afraid that putting any sort of paste on the picked areas will cause shavings and other debris to stick to it and I know she will want to peck that too. I love my chickens so much and this is really stressing me out. I know you guys understand how attached a person can get to those silly birds. I REALLY don't want to even think about this, but would removing her from my flock be the best or only option? Thank you everyone for taking the time to read this novel. I really appreciate it.