I agree with the other hunters, May is great. Be patient in the mornings. A lot of times, after fly down, the toms seem to check out the real hens first. Then after a quick feed, the bred hens go back to nest, and the toms seem to gather and stroll the countryside in search of receptive hens. This is a good time for calling and decoys. I see a lot of action between 8:30 AM and 11:00 AM.
Good luck!