Northern Shrike hits our window. In spite of 8" by 8" grill grids to prevent this a N. Shrike was trying to make a meal of the Juncos feeding at our feeder. It did a fly thru of the Juncos on the ground, missed, lost concentration, and hit the window. It took about 1 hour but it did recover and fly off. This is the only songbird preditor and we often have them here during the winter. We have a plum thicket about 200 yards from the house and sometimes
find mice impaled on the plum thorns by the N. Shrike.