You do not have to contact your CO regarding the picking up of a found skull with attached antlers. There is no tag for those circumstances.
As far as picking up roadkilled deer. We (DNR) give out salvage tags in those instances, but the individual has to take possession of the whole deer, not just to take a nice set of antlers. Plus, if I found a set on my time off I could keep them, but anything found while working for the state (much like your DOT friend) we (COs) have to turn over to the state. We can't keep them.
Doug Clayton
State Conservation Officer