I have 3 RR hens, a pair of Bantam Silkies. a White Faced Black Spanish Bantam rooster and 2 hens and I had 3 Dominique hens, all about 9 months old. One of my Dominiques was much smaller than the other two, about the same size as my bantam hens. The two bigger RR hens are dominant but the smaller hens stayed out of their way when eating. They all seemed to get along really well, but the small Dominique was always missing feathers. I assumed it was from the roosters but also noticed the other hens picked on her someitimes. I have a 50 foot by 100 foot open run so they have plenty of room. Yesterday I found the little Dominique dead. She was completely intack but her insides were missing! There were a few feathers near her but not a lot. What would have done this? My husband thinks the other chickens killed her because any other predator would have taken her away. Any thoughts?