Turkeys don't move to a "breeding area". This time of year the birds are bunched into their winter flocks, normally large bunches of hens with their broods and a few jakes. The toms will be in the area but don't really mix with these winter bunches except to share a common food source. In the spring the bunches will spread out, generally moving up in the hills and start grouping in smaller bunches as the toms begin gathering their harems. Using the areas you are seeing the winter flocks as your stating point, follow drainages for up to a mile or so and you should find birds.