One of my hens took flight and escaped whatever was after her today .She apparently injured herself when she landed but I couldn't find any injuries. I carried her while locking the others up so it wouldn't get any of them. I only got a brief glimpse of something orange above her in the woods...
Most predators aren't a threat when you have predator proof coops and runs (I know because I have both!) But to assume you will never have to kill predators is naive because clearly some predators are dangerous.