Mason Farm Biological Preserve is a research reserve of the University of North Carolina at Chapel Hill. Visiting requires a permit which can be easily obtained from the NC Botanical Gardens. From 15-501, turn left on Old Mason Farm Road (look for brown NC Botanical Garden sign). Stop in at the Botanical Gardens for a permit and a detailed map to the preserve which is further down Mason Farm Road, behind Finely Golf Course.
A red-tailed hawk preys upon a red-shouldered hawk. I encountered this unusual scene one rainy day while visiting a nature preserve in my town. I heard the hawk calls and by the time I found the location, this red-tailed hawk was already plucking the feathers off a red-shouldered hawk---notice the pile of white down near the log. Over the course of 4 hours, the red-tailed hawk slowly consumed the red-shouldered hawk, leaving very little for scavengers.