There Was a Bird Here
You don’t witness it very often, but birds do collide with objects more frequently than they would like. Surprisingly, they leave a lot more distinct imprint than one might imagine while they’re at it. A bird landed briefly on this dusty table, yet you can see quite a bit of him!
Typically, the same thing occurs when a bird collides with a dusty windshield or a closed door. It’s bad for them, but they normally survive without incurring long-lasting major injury. At the very least, most of the time.