If your house has any large glass windows or doors, you've probably heard that sound a bird makes when he flies into the glass at high speed, mistaking the reflection of the trees for another way through the wall. It is sort of a combination of "Whumph" and "Thud." Let's call it: "THWUMPH."
Well, here is the visual equivalent of "THWUMPH."Unfortunately this Mourning Dove did not survive the impact, but did receive a decent burial in the woods.