Two days ago I got a call about some hens that needed a new home. When I brought them home I put them in with my laying hens. I have 25 layers, no rooster, The new hens were keeping to themselves bt seemed to be ok. this morning there was a dead one with its head torn off. I beleive that one of my older barred rocks did it. Has anyone seen this behavior before? This hen is the bossy one and does push the other smaller hens around. I did remove the suspect to her own pen.