I found a big hole in the chicken run the other morning. I thought that filling the hole back in, and covering it with a cinder block would take care of it, but apparently it did not. The animal just dug right under the cinder block.
The side of the run, that shares a wall with the shed is the weak point. All the other sides have four feet of wire on the outside to prevent digging, but I could not get the wire under the shed.
So I dug 4 feet on the inside of the run and lay down some wire, covered it back up and put the cinder blocks back down.
So far so good. It helps me sleep at night.
Here is a peek at the inside of the coop, which is just a 4 ft by 4 ft corner of our garden shed shared by seven layers (although I like to call it the barn).