Years ago when my son was about 5 years old, he was in his bedroom playing with his cars & trucks. I heard a crash & he let out a terrible scream. I ran in his room to ( He is 41 now) find that some sort of bird came crashing through his window. Scared the stuffing out of us. The bird must of flew back out of the shattered window because he was nowhere to be found. You would of though it would of knocked him out at least but I guess it didn't. I have had birds fly into our windows before & since but that was the only time one actually came through it. He didn't know his birds back then but it touched him before it flew back out & I think that is what scared him the worst! lol