turkey hen attacks

I have had three turkey hens attacked and their eggs were stolen. I can tell they stayed on the nest and tried to fight. There were feathers all around. The latest attack all her feather are pulled off back and no tail feathers. She has a few cashed on her tail and back. The other hens injuries were on thier breast and back. Are these coons or dogs? My turkeys are free range. I have lots of chickens geese peacock ducks. What ever it is has not bothered them yet. Pleae help. My birds my pets and friends)