Dave;
Ok since this isn't a joke. Then I would have to say that the turkey have a roost tree somewhere close by. If they're there in the mornings, and evenings. The turkeys are going to the tree in the evenings, then leaving the tree in the morning to go out and feed. I'd tell your neighbor to go out and find the tree. He needs to spook them out where they don't come back. My turkeys give me the same problems in my garden, but this year I double fenced it in. I used a regular cyclone fence, With a gate, then put chicken wire in the inside of that. To keep out the smaller critters. I myself, put up with the critters.