Cant say what the deal is as I've never hunted Penn!But I have also seen a change in the birds around here as well.RR makes some very valid suggestions that I'm sure have a bearing on the amount of gobbling activity we are all NOT hearing particularly on the roost.Coyotes as well as other pretadors have figured out turkey talk means a potential meal coupled with hunting pressure from man himself definately leads to much quieter woods.One thing I have definately noticed in our birds is alot of days there is more gobbling activity in the late afternoon hours than at first light.I do believe this ties right in with some of the predation issues as well as to many hens early in the day.Calif is pretty leniant as we can legally hunt till 4:00 PM.But with that said it still leaves plenty of day left for the birds to fire-up and do there thing....Bob