While nature-walking through the St. Lawrence University woods, our group saw a porcupine high up in a tree. Porcupines are the second largest rodents in North America. In the cold winter months, they eat leaves of evergreen trees as well as the inner bark of trees. They are very common over most of the U.S. I had to take this photo because, although I've lived in or near the North Country for most of my life and am no stranger to the Adirondack woods, I've never before seen a porcupine! At least, if I have, I didn't know it; it's easy to mistake a porcupine that high up in a tree for a bird's nest of some kind.