I don't know what this bird is, but it looked dead. I carefully went outside through a different door than the cats were using to plot their Thanksgiving dinner.
The bird appeared dead at first, but then I saw that it was breathing and the eyes were flickering. I left it alone for 10 or 15 minutes. It was still there. Still on its back.
I went out again and gently tried to turn it over. I placed it breast down and left it alone again.
I checked 20 minutes later and the bird was gone. The cats had been inside the whole time, so I figure the bird recovered from the head trauma and went home to recuperate.
A few days later, I once again heard a loud thump on the window.
Once again I saw the cats plotting dinner. Once again I found a stunned bird on its back.
It was alive and I left it alone.
This time when I helped the bird upright, the head kept turning to one side. With my massive education earned through watching medical shows on television, (my version of online education) I diagnosed a neurological deficit through blunt force trauma.
This particular patient checked out of the hospital AMA...Against Medical Advice.
I can't stop cleaning the windows, because I don't actually clean the windows. So I don't know how to stop this bird apocalypse. Opinions are welcomed.