One of our delawares has flown the coop, literally... several times a day. This practice is hazardous to her health considering we have dogs that are fully capable of killing a chicken in the yard. There used to be mesh covering the run to keep the chickens in and airborne predators out, but we removed it and put on wood slats instead to help a vine grow up there for shade. Somehow, she is getting out through the wood slats. There was a fairly big gap when Dave first put up the slats, but we added a couple more thinking that would solve the problem. It didn't. Our next trick is to try clipping the offender's wings. We did her right wing yesterday to see if that works. If she gets out again, we will clip the other one. If that doesn't work, we may have to staple the mesh to the underside of the slats, though I would like to avoid that since it will make it harder for the vine to grow there. Hopefully one wing clipping will be all it takes!
For directions on how to clip a chicken's wing, go here .
*It's really very easy!