Nature is full of surprises!  This Blue-headed Vireo (Bldg. 11C) was just reported at 3:00pm today.  I went over to document it and as I held it in my hand, I was gently dive-bombed by a hawk, a Sharp-shinned or Cooper's.  It was so close I could feel the soft breeze from its wing against my face! I wish I had gotten a better look at it.  Maybe this vireo was chased for some time until it crashed into the window?  I'll never know the details of what happened, or what species of hawk it was, but I will certainly never forget!  Hopefully the hawk will come back and finish what it started.