killing birds

Greetings all, first I must apologize for this question actually being more applicable to a dog training website than a chicken forum, but I have used this website to answer so many previous questions before, I just hope someone will have encountered a similar problem and has found solutions...

It started Tuesday with a random dead bird, no signs of being eaten. Then Wednesday when I got home from work I found 2 of my 2 month old light brahmas gutted out and left in the run. Thursday one more now Friday 2 more! I am so upset and dont know what could be doing this. We do have a few...