NjHunter85-- Sometimes you just need to guess what that tom is thinking. With turkeys, the natural way of life if for the hens to go to the tom, so calling a bird in is a challenge. You have to let him hear what he wants to hear. Some birds get really fired up, as in gobbling the second he even hears your first yelp and responding to every call you make, and will come in fast and hot for the hen (you). Other birds might gobble on occasion, but not to every call you make. These birds are usually less excited, more interested in the hen coming to him, etc. When I call, I usually try to measure the tom's level of excitement and match it. A bird that's constantly gobbling will get a few more responses out of me than a bird that's quiet.

As the bird gets closer, I will usually get really light with the calls or stop calling all together. If you continue to call heavily, the tom might hang up thinking "hey, this hen has the hots for me and she's going to come to me." By letting up or going quiet, you prevent that way of thinking and instead the tom will often come in to make sure another tom hasn't responded to the hen or to strut for the hen to try to get her attention back on him.

I consider it to be over calling when you start calling just to hear the tom gobble. Think about it, most guys aren't fond of a girl who constantly runs her mouth. Have a small conversation with him but keep him guessing. I don't really think you can under call a bird, just calling once means the tom usually knows where you are at that point and if he wants to come, he will come. Light calling is probably still the better strategy with a bird that is doing little to no gobbling though.