Roost areas and food sources would be a good place to start. Not sure where you live but there are several things to do. Turkeys love food plots just like deer. I feed corn to the turkeys on our farms from now until about March 15th. Do controlled burns in the timber, this opens it up which creates more feeding opportunity b/c of native grasses and improves strutting ground. Predators are another key to having good turkey numbers. Trap as many coons and possums as you can. We bought a 100 acre farm several years ago and we would only see 7-12 turkeys on it for a couple years. I had a guy tell me to start working on the predators and I would see a big increase in my flock. The first year I trapped or shot 100 possums and 35 coons. We now have 50-75 birds on that farm every year.