We have had our 5 chickens for about a year now. No issues with predators up to this point - this weekend one of our girls passed naturally. The next day one was snatched up by a fox and it ran off into the woods with her. I think our coop is very secure - hence not having an issue with this before but as of last spring we started free ranging the girls in the evening when we get off of work - so around 4pm until dark when they go in then we lock them up. I am thinking maybe because of the time of year? it was evening yesterday and the fox came up and grabbed the one - we only knew and ran out to see because they all started making noises. Should we maybe not free range durinfg fall and winter? Like i said, only had chickens a year so we're still learning. SIDENOTE: when I finally got the other 3 girls back into the coop and clsoed up for the night...my husband looked out the window and saw our fourth girl BACK - tryin to get into the coop in the dark - he ran out and get her in safely. I have NO idea how she got away from that fox but she did and i'm so thankfully- I felt so bad because now I feel like I shouldn't be letting them free range.