Almost 3 weeks ago I had some kind of predator invade I lost 7 of my chickens. Well we found 1 injured no broken skin or anything but badly bruised on her chest we separated her for a couple days till she would have no more of it. 8 days later we had a hen to reappear, now I have had another to return both of the returnees looked none the worse for wear. My question is where have they been ??