I agree with muliefever. I have heard tons of buck grunting going on in the mule deer rut. I called a nice buck in for a guy last year. Several times I have heard them before I saw them. This was in the first 2 weeks of november. As november passes, the vocalizations tend to die down, and the area I hunt starts to get some weather. I hunt a large migration route. As the season wears on I will hunt the areas that the large heards of does are working. I will try to get to the trail as soon as I can. Usually I will catch several bucks trailing only minutes behind. I will sit around 20 yards uphill from the trail that the does walked, and will be positioned perfect for the passing buck. Mulie bucks will be pretty noctournal almost all year. The need to participate in the rut will draw them out for a breif period. This for me is the best chance at bagging a nice buck. If it is earlier than I stated, then find them on the bed. Mule deer won't pattern like a white-tail. They are nomadic as stated in the earlier post. One mulie buck can travel large areas in search of migrating "hot" does.