My girls free range in our fenced backyard and we still have problems with predators. I was devastated when we lost our first chicken. We were out for an early dinner when the babysitter called. She had gone out to the coop to look at the baby chicks and there was a cat sitting in there! All the babies were there but two of the big girls were missing. My son found one over the fence, across the creek, and in the neighbor's backyard. When we got home we immediately went on the search. In the creek, at 11 o'clock at night, with headlamps, in the rain. What a site! We never found any sign of her, not even feathers. It took me days to get over. I even bought 4 new chicks to help my heart heal and then 2 months later lost two of those to a hawk. I bought 4 more chicks and lost 2 to rats, right out of the brooder! It's been a hard learning process for me. I feel badly when my mistakes lose a bird. The good thing is I totally learn what to tweak so it doesn't happen again. However, I feel like free ranging makes them the happiest. My girls free range from sun up to sun down, and I can't be out there all the time. I watch as much as I can and do a lot of praying that nature passes by. The girls are all a bit older now, and I bought all "camo" looking chicks the last time around. Hope you find that coyote and blast it! Best wishes.
