what time does turkeys start flying back up to the roost how much earlyer
than sun down and will turkeys come back to the same roost once they have been scared off the roost that morning will they be back that eveining???

In my experiences, there is no "set time", and it just depends on the birds whether they will come back to the same roost that evening after being scared off that morning. I guess it depends on what (how) they were scared off the roost. If you know of a pretty reliable area where the birds go to roost, get there about an hour and 1/2 to 2 hrs before dark and set up doing some light calling (purrs, clucks) and try to convince a tom to roost where you are. Remember, it is easier to get a tom to come to you when your close to where he wants to be anyway.

The turkeys where I hunt at will fly up when it is still good and light. I would say probably 30-45 min before sunset. I have never tried calling to the birds to get them to roost where I want them too. I might try that some this season.

What I mean is to call them to your position then shoot 'em.