Lure the turkey by placing grains like corn in your yard. Have a trapping box handy. Wait until you see a wild turkey go for the bait, then proceed into the yard.
Approach the turkey quietly from behind. Turkeys are very skittish and will take off flying at the first sense of danger. Have the box ready to throw on top of the turkey.
Quickly throw the box on top of the turkey before it runs away. Have a second individual bring out the sheet of thin metal to you. Slide the sheet of metal underneath the box. This will keep the turkey from trying to dig out.
Place a weight like rocks or bricks on top of the box in order to keep the turkey from pushing its way out of the box.
Call your local animal control office; its officers will come and remove the turkey from your property. You legally cannot do the removal yourself in the state of Pennsylvania.