Yes, I have wire over the coop, but there is a small gap between the door and the frame, I am guessing somehow he figured out how to get through there? It's either that or he somehow slipped between the layers of wire over the coop. Poor thing was scared out of its mind when I went in the coop to get it out. Managed to hook it with a leg catcher and get it outside.
Where I live is predator central, lots of owls, hawks, coyotes, fox, weasels, skunks, oppossoms, dogs from other farms. The coop and attached pen are locked at night, opening the pen to free range when the weather is good. As long as nobody is out overnight and as long as they have lots of Iowa Blue blood in them, they tend to survive. If they are not Iowa Blues, they have to be locked up or they disappear pretty fast. The juvies I keep locked up, but the adults do well on free range during the day.
I really want to build me a chicken barn, but the logistics of getting that accomplished with my work schedule is daunting.