The turkeys are the heritage Sweetgrass varietyPretty turkeys, what breed(s) are they? That's good of you to let the old dog back in the house for the winter. If he is messing up, you can always use a dog crate at night or when you are not at home.
He has an insulated dog house with straw and a flap to keep it even warmer, but he would never choose to live there rather than the house lol. He’s a total comfort hound. He literally has to be made to go off the porch in cold weather or he’ll go to the bathroom right outside the door rather than risk getting his toes coldCould you put out a dog house filled with hay, not too big, so he could stay warm if he chooses to be outside?