We are back this week with our series about the native trees of Chicago to discuss a tree that is unique in our Midwestern landscape, the birch tree.  Birch trees are medium to large sized deciduous hardwood trees that are most notable for their lightly colored, paper-like bark.  They are generally planted as shade trees, but the vibrant color of its leaves in the fall in contrast to its light-colored bark creates quite a sight, making birch...