I already know the answer, I think, but thought I'd post for advice/encouragement. I have 11 pullets/hens that are almost a year old. I have had a problem with feather picking all winter, and perversely, it's actually getting WORSE now that the warmer days are here, I think because the girls want OUT of their run and are frustrated when I'm at work and can't let them play outside. I know the main culprit--it's Matilda, who is a Production Red. She has absolutely PERFECT feathering and I've seen her going from one chicken to the next during their preening/sleepy time, ripping feathers out of her friends and eating them. In particular, two of my Orpington girls are getting picked on. Bonnie is very ratty looking (she's low in the peck order and very docile) and now has a bare patch on her behind under her vent. Yesterday when I came home at lunch to check on the ladies, they had Prudence, my most favorite one, bleeding from a small 1/4" wound in a bare patch beneath her vent.I have applied black salve to it and they're leaving her alone today, but I think I have to do something about this before it escalates into all-out cannibalism. I also have suspicions that two of the snippiest of the Orpingtons are also doing it--they also have near-perfect feathering and they're very pecky at me and at the other chickens. Who do I cull? All three of the suspects or just Matilda? Or should I attempt to separate the suspects for a while first? My chickens are my pets and I hate to cull them, but I will sacrifice one or some for the good of the rest, if necessary. Thanks for any help.