BISON - MASTER OF DISGUISELast year's trip to Yellowstone National Park was a tremendous thrill. Beautiful landscapes, flowing rivers, waterfalls, geysers, and wildlife. The bison were everywhere. Seeing them plodding along, grazing in the fields, would suggest these are just humble, passive creatures. But that is just a disguise. They are deceptively fast and quick to take on the offensive posture. The long lens was my primary tool for photographing these magnificent creatures.