Wild Turkey Calling
In any new location the best approach would be to imitate a series of clucks and yelps, gradually increasing the volume and the aggressive nature of the calling. Starting off too loud could be counter productive and actually scare the turkey away. One of the more logical tips is to adopt restraint, as over use will increase the possibility of hitting a wrong note, plus it will inevitably alert the target bird that something is not quite right.
There is of course the gobble sound itself, made by the male to attract the hens and also to make a statement of intent, so by copying this sound, a hunter can alert a curious rival. There are obviously different success rates, depending on the season of the year, with the spring turkey calling process, something of a theatrical masterpiece. It needs a little flirting, followed by a period of playing hard to get, by both the male turkey and the hunter. It can be quite comical, but eventually, with a lot of patience thrown into the bargain, the turkey calling will work.
Hens use short plain clucks, usually consisting of one to three notes per second, when they are attempting to attract another bird, so a really good tactic is to try and replicate the sound of a hen, with an exact echo of the number of yelps or clucks she makes. This will enrage the other hens and bring them out into the open looking for confrontation, and if you are lucky the male will follow behind, curious to spy the rival - suddenly a double opportunity presents itself.