Both hens. Muscovy duck that is normally peaceable and even cuddly but since she started molting won't let me get near her. The silkie is the same one that was "sick" the other day. She seemed to have recovered, so I released her from her kennel in the kitchen back to the other chickens. I now suspect she was attacked then as well. I watched them for over an hour after sending her out, just to make sure she really seemed ok, and she did begin to reestablish her spot as the Alpha chicken. But this morning, I heard a squabble and went to check, and found the duck pinning the chicken down and viciously pulling her feathers out. I rescued the chicken, but she is bleeding in several places. Gave her an Epsom bath and patched her up with triple antibiotic ointment and am keeping her in the kitchen again. What would cause my duck to suddenly attack this hen? Did I release her back too soon? Should I have kept her back longer? Does the duck sense something wrong with her? We have two ducks and three other chickens that the ducks have no interest in (at least so far). I'm so new at this, just had all of the poultry since August, so your help is appreciated.