So sorry to hear about your loss. That really sounds like a dog attack. That's what happened to my Black Star, she had all the feathers on her back picked out & a big chunk of meat gone, then went after my Silver Laced Wyandotte, but I shot at them with my 7mm-08 & I just missed, but was close enough to make them drop her. As was said before, they'll be back, now that they have the taste. Find out what your legal rights are where you live about loose dogs on your property & contacting the owners for any damage they do.