I think a lot of how snow and cold affects them will be determined by what stage of breeding there are at. We hunted in KS last week in the snow, actually while it was snowing. The turkeys weren't breeding yet, but the days before the cold and snow, they were really fired up and callable. But during the day of snow, they went silent and did no struting. The day after the storm, all was just about back to where they left off!