I don't believe there is a shortage of turkeys, i have seen plenty of them during the summer through winter months. There is just a shortage of gobbling, especially the past 2 maybe 3 years come prime time. With the number of hens around, a bird doesn't have much reason to gobble and walk around looking for a lonely yelper (AKA hunter), when he has a large number of hens by him.
I don't have a clue what the ideal ratio is between gobbler/hens should be, but i wouldn't doubt its out of whack.
Hopefully, the new coyote seasons (almost year around) will help out some in the predator issue. I will be doing my part. Maybe the board can have a predator contest on here??