I live in mountains on the edge of the woods, lots of Bobcats, Coyotes, Cougars, Fox, Bears not to mention Hawks. I just don't free range unless I supervise or at least am milling around outside. These predators are always lurking. I have found that first thing in the morning and early afternoon seem to be the most quiet for predators but times may differ in your area. Much of the day my birds stay in a large run. Give them things to do all day.... levels, mirrors, swings, branches to roost on, ladders, hanging cabbages, flake of alfalfa hay, etc...