Window pain

If you look carefully you can see an impression of a bird in flight on this window at church.  I have three more pictures, all of different birds (presumably) on the same window.  A little flock of birds hit the window at the same time! It was crazy to see images of four birds all in flight, with their wings flapping. Alas, there were several little piles of feathers on the ground below.  I guess it was some cat's lucky day.

We discovered this on a Saturday when we arrived to take our turn cleaning the building with the Grahams.  We gave high marks to the families that had cleaned the previous week.  Good job on the windows!