I have a tom who has been attacking chickens while free ranging. It's been pretty violent, but I thought it was just pecking order stuff. The other day I saw him pick up a hen by the neck and jerk her up and down a few times. Yesterday I found two dead hens with nothing else wrong with them except broken necks. I can't think of what other predator besides a dog would do that kind of damage, and there isn't any way a dog could get into the free range area. I have the Tom locked up today. Is it really possible he's to blame?