Stained Glass?

Keith and I were surprised to find that our family room window had a new lovely look. It seems that a large, not so smart bird, had a run in with our window. When the sun shines through you can perfectly see the outline of his (I assume it was a male...because, well, you know) head, body and wings. This window is NOT easy to get to and will not be cleaned for a while, as we need to hire someone to do it. Keith was very excited at he prospect that dirt would start accumulating on the grease, guts, & grossness and soon it would be a well defined bird print. I, of course, am not at all excited about this. However, I am curious to see what happens. Whether it will go away or get worse. I will keep you posted.