My speckled sussex started losing feathers starting in the tail end a couple of weeks ago. I am trying to figure out if it is Picking, Mites/Lice, or natural molt. The feathers are getting fuzzy and shrinking down rather than disappearing all together. I don't think it is mites or lice because I have checked her ten times over and found none, and no other hens seem to be affected with this. So I am thinking either molt or picking. My Barred Rock has been strangely agressive lately and drew blood on the neck of my Dominique. I haven't seen her pecking at my Sussex though. How can I fix this problem? I am not getting rid of the Barred Rock.