I had a flock of chickens that we free ranged during the day in a 1 acre fenced in yard (chain link), and were cooped up at night. I started loosing one here and there, then one day 7 went missing in one day. Neighbors reported a red fox leaving the scene. After we started cooping up the remaining two full time, opossums got my last two. My question is, why didn't the opossums bother the chickens while they were free ranged during the day, but only after I stopped letting them out. Opossums got both at night, so that opportunity was always there. While chickens were free ranging, I used to throw out kitchen scraps in a sort of compost pile, but stopped doing that once I stopped letting my last two free range? I'd like to get more chickens, but not really sure how to completely protect them. A dog against the foxes? Go back to "feeding" the opossums with kitchen scraps? Any ideas?