cats will drop off presents for the neighbors. all of mine when I was married did, and my one neighbor used to bitch like no tomorrow ("You have to teach your cat not to do that"...HUH???? Another clueless dimwit. She probably also thought you could teach a deer to wear a condom!)
anyhow--birds DO fly into objects all the time..like clear gl [no swearing please] with no sunshine glare on it. I was in grad school 20 years ago getting my MBA, sitting in the library studying for a finance final..BANG--the first robin of spring smacked the window by my head. I figured it was an omen, went home, got in the sack with the wife, and had a few drinks. B+ on the exam.