I'd be scouting from a distance with binoculars to find out for sure. Unless the turkeys left the property, you should still be able to hear morning gobbles before they fly down. I'd guess they are still using edges of the field if there is only freshly turned soil where there used to be seeds, grubs, and insects. There's bound to be something edible under the leaves in the woods where your field(s) have woods around the sides. I saw turkeys feeding on grass seeds and scratching in leaf litter where I sat and watched this morning, so unless they've left the territory, their sign will tell on them.
Good luck. I hope you figure them out and get the drop on 'ol Mr. Longbeard.
Jim