The red-tailed Hawk paused over his brunch of wild vole this morning to gawk at the strange sight of a senior citizen on a three-wheeled bike, something not that common, like the hawks and eagles, on the nature trail around Purgatory Creek in Eden Prairie. The Hawk regretted not having his camera ready to document the strange sight, he sighed and went back to his meal, as the old biker went on his way.