Bake at 350 degrees for about an hour and half. A little less if your bird is smaller, a little more if your bird is bigger. You will know when it is done, when the internal temp is above 160 degrees in several places. When you pierce the bird with the thermometer, the liquid should come out clear. If it still has blood in it, put it back in the oven for another 15 minutes or so. If you do not have a temperature gauge, get one now! They are cheap and will save you a lot of heartache.