Rest assured, the turkeys are not through gobbling for the year. There are many variables to why turkeys will and will not gobble throughout the spring - weather, availability of hens, hunting pressure (i.e. educated toms), and timing of the turkey rut, for lack of a better word, all factor in. The main reason why toms gobble in the spring is to attract hens. Many times toms will not gobble or may only give passive gobbles if they have the hens close by. Simply put, that is why the toms gobble a lot in the early in the spring - to attract the hens that are still in their winter groups. However, as the spring progresses and the dominant birds have the hens close and start breeding, they may shut down for a while. This will not stop the jakes and subordinate toms from gobbling though because they have had little to no action and are looking for love. Later in the spring, once the hens have been bred and are sitting on their clutches, the turkey rut can get fired up again and the dominant birds will gain gobble a lot trying to locate hens that may have been missed or do not have a nest. I have heard turkeys gobbling their heads off well into June. So, my advice would be to simply get out and if needs be cover some country to find birds that are receptive to calling and work them because they are there.