We have 5 acres in a rural area and I let them out to free range but I always supervise. I try to let them out for an hour each day… it’s become my relaxation time and I’ve grown to love the quiet and watching them.
We have red tails, cooper hawks, a cat that tried to attack one of hens, ground hogs, and last year a handful of dogs that got loose and ended up in our yard. Plus foxes, raccoons and coyotes . The hawks are our biggest problem though.
We also built a chicken tractor (enclosed pen) on wheels that I use sometimes. It’s not 100% predator proof say from a fox digging under it, but I can put them in there while I water the garden and still have an eye on them.
Unfortunately right now they are fully locked down due to a confirmed cases of Avian Flu 11 miles from us.

they are not pleased.