Sorry to hear that this happened to you. I have also had mutiple birds killed at one time and found that our neighbors dog was killing our chickens. Sometimes they would just leave them and not much of a mess, other times feathers everywhere, other times they would take them with them. My husband one day was out in the fields planting corn, and there was some of our chickens near where he was, then he saw the neighbors dog, he scared it away for a little bit, but when he was coming back down the path he saw feathers and then saw the dog heading home and found where the dog buried the chicken. The predators I know for sure that I have had, has been the neighbors dog and a coopers hawk(they about the size of a chicken). Coopers hawk kill their prey right where they catch them and eat them right their for they can't fly off with them like red-tail hawk can and they usually only killed one at a time. Our neighbors dog has just killed 4 of my chickens in the last week within two days. He left one at our house, took one home with him, and never found the other two. And I would have to say if you pen your chickens up at night it probably is a dog. Since, that dog killed my chickens in the morning and throughout the day. I use to have a flock of 30 chickens and now I am down to 17 chickens, and I also got 13 buff orpington chicks. And since we have had a talk again with our neighbor about tying up their dog we have lost anymore chickens.
