Yep not good foxy bingo soon catches on if that coop door is open,
Sometimes think he's waiting for you to slip up once and he's in..
Once lost a load of copper black marans which took me years of breeding to get the eggs's right
For him come and mince half of them(lesson learned)..
Beef up security because winter hasn't bitten yet so the worst is yet to come....
I'd get it trapped if I was you and give it some lead might not be easy but it will become a pain now he's found them..catch live trap in front of a open coop with a big rock on it he'll soon run in to it
