Here is some of my thoughts. My First thought would be if you can see him he can see where the Hen should be. Next would be, you say, it sounds like he is 60 Yards? Are you set up on the fence line? If not can you move up a Few Yards? also he might have Strutting area their he likes. Or it could be so thick he don't want to go into it.

Next would be that Turkeys Cannot and Do not think like humans.

If he did he would be thinking that hen is calling to much, has been their for several days. I am geting out of here, I just rememebered it Turkey Season and I am not safe. Sex is not worth losing my life over. Oh yeah, if I wait just a few days its all over.
Or maybe He thinks like this. That hen sounds Good. Oh no I see a Hunter I bet he ran my woman off, maybe she will be back?

Sorry but we give them to much. However, they have GREAT Instinks, Eye site...that I don't know how anyone can measure it. Hearing the Same! And you have heard people say if they could Smell we would never kill one. No True. we would hunt them against the Wind, with a 22-250 form a distance

All this Lip from a guy who didn't get a bird this season! Think about what I have said and if its not true forget it!

TF