Turkeys at my place are in and out of the trees. They roost in the trees at night and actually roost sometimes over one of my stands, which is a bit disconcerting when they suddenly take flight in the dark (and you are sitting for hogs). In my observations at my place, they prefer a mosaic environment where they want access to cover and don't want to be far from it if they don't have to be.
http://s1274.photobucket.com/albums/...1359225076.jpg
Here they are today, chowing down for lunch at my feeder in the food plot I planted for spring. They spend a good pit of time scouring it for various bits and bugs across the food plot when not at the feeder.