I'm having trouble determining whether my hens are victims of pecking or whether they have mites or another parasite. They were afraid of the snow and spent all their time in the coop from the beginning of December until yesterday when I finally dumped a bag of pine shavings in their shoveled run and sprinkled some black oil sunflower seeds on it. That got them out quick! There's one (my Wheaten Marans) who is not affected in the least. I noticed her pecking the behinds of the other chickens today, but it was the first time I had seen such behavior. I made them a dust bath, cleaned the litter out of their coop and dusted everything with DE just to be sure. Any ideas if this could be mites or just a case of a bully chicken? You can find many more pics on my blog . Thanks! One of my black copper marans The other black copper. She's a little worse off. The worst of all, my Welsummer. Mysteriously and suspiciously the wheaten marans shows no damage.