Second, application of too much pressure will cause an animal to bolt, backup or freeze. Third, use slow deliberate movements. Sudden jerky motions elicit fear, as bison associate them with a predator atta cking. By controlling the position and intensity of the lighting, the handler can reduce anxiety and induce the bison to move from one area to another. It is crucial to avoid strong contrasting lights, which cast shadows.
Shadows are contrasts tha t cause most species to balk.
Lighting that gives the effect of an overcast day, generally work the best. If a bison can not see what awaits him in an area, there is a normal reluctance to enter - a matter of survival. On the flip side, most animals feel safe once they are in a dark area. If I can't see you then you can't see me. As mentioned above, bison feel secure in dark areas.