Well, if you previously visited the original Monster House post, here is the follow-up. I did go to visit again and guess what? The birds are gone! So it appears that there were two large birds sitting on the chimneys at the same time. It originally seemed that they may have been fake birds placed there to deter other roosting birds, but in fact they were roosting birds!
Here are photos of the front from a different angle, the side, and rear of the building. You can clearly see that the birds have flown off.
But now a new strangeness appears…Take a look at the third photo. Zoom in to the middle and upper windows. Do you see eyes and faces?