Recently I have noticed one of my Blue Slate hens walking up to any of the three Royal Palms I have, reaching over and plucking a single feather from their back and eating it. She, the BS, is the one hen that I have that is agressive with the other birds. Is this just a way of showing her dominance? Or is it a sign of a lack of something in her diet??? I know in the past when I have dressed off some of my BBW's I would find small feathers in their gizzards but I never saw any of them purposely pluck and eat another birds feather like it was spagehtti!