McChooky
Free Ranging
It looks like predators are getting inside the coop thru the gaps in the door or the top.They were in a small cage to bring them inside, but I temporarily put them in a large fabric dog container because I don't even want to put them outside, right now.
Its got too big of a gap in both the top and the door. If you don't have anywhere else to keep them you might want to keep them inside or re-home them.Predators can get inside any opening less than 1/2". Sorry for your loss!