I awoke this morning went out the back door saw in of my hens and a pile of feathers. Her head and neck had been ripped from her body. Another pile of feathers the other way, no bird. Check the coop, only a handful were there. Check the field, one more hen with head and neck ripped from her body. More feathers, one more dead but intact. Drove quad around looking for the rest of my flock. Found some, got them home. At the end of our dead end road (about 1km) I found a head and neck. Crows or Ravens were flying overhead. I've let my flock free range for the last couple of weeks. I know the risks. Although this is my first experience with this kind of loss. I'm wondering if a crow or raven COULD do this? We've had a lot of them around. They've stolen eggs before as well. I lost 4 birds this morning. I'm just wondering why the mass slaughter seemingly for no reason. Not for food, they didn't eat any. Any thoughts?