I had to go to my sons house today and pick-up his one and only hen left. some type of predator got his flock. two where found in the run torn to pieces and the rest were in the coop it looked like they were torn up a little but all in the neck area and huddled together. any ideas on what got them and with the one hen I have her in a small cage. the cage is out with my flock. how long do I need to keep her separate from my flock. all are about the same age and one of my two roosters is dancing around her cage