Hens digging under fence

If they can dig out, any predator can get in. Fix ASAP before your flock is wiped out. Buried wire, concrete base, or some serious dig proof combination, with hardware cloth used. Pictures would help. Mary

 

Excellent point.

For the problem of the hens getting out, I would do a "reverse anti-dig skirt" - meaning run a skirting of wire under the surface of the run that extends inward 1-2 feet so that when they dig down they encounter the wire and are not able to get under the perimeter and out. To prevent predators digging in you will want to install the same skirting on the outside perimeter of the pen.