Generally speaking, the 1st week of your season should be the best for getting toms to respond to your calls. It is all according to when they actually started their mating season. If your season starts a week after they have started mating, then you may find that your toms are all henned up. At that point you may find you have better luck later in the morning after the toms have met and left their gals to find new prospects. Sometimes you may find it easier hunting later in the season, when most of the hens have been bred and the toms are wandering looking for new gals.