Phantom Bird

I heard a thud, I ran outside to see if there was a stunned bird lying underneath the big front window. Nothing was there. But when I went back inside, I saw this on the window. Don't look at the trees, look at the white imprint that was left on the window.


Upon closer inspection, I can see individual feathers and feet. It is hard to see with this camera, and taking photos of anything on a window is difficult as I keep getting reflection from inside the house.