For over a week now I have witnessed (northern Illinois) many bucks locking horns. Most were obvious mismatches where the dominant buck appeared to be teaching the youn guns. Nothing really aggressive with the exception of two different pairs of bucks who were already going to town. All of the activity has been after dark. Looking to get ahold of a friends nite view video camera for future scouting excursions. Im really going stircrazy now!!! Cant wait!!!