Social Animals vs. Loners
Most whitetails are gregarious. When I encounter a buck that's consistently alone in the preseason, I immediately sort him into the no-call category. Either he's been bullied and is avoiding confrontation, or he's simply a shy recluse who wants to be left alone. Of course, a lot of deer fall between these extremes. They may respond to calling or rattling, depending on their mood at the moment. If you don't know what kind of buck you're hunting, start with low-volume calling and look for body language that indicates aggression: a direct stare, raised back hair, or the start of an approach. If you see any hesitation or signs of alarm, back off your calling. The buck may come to a call another day, but not today.