There is a huge increase if you don't mark the windows with some kind of visibility method. In my case, these are in the useless parts of the window, so it was easy for me to simply add tiny ornamental wind socks without anyone asking what I was going for in making those windows difficult to use (you know, aside from it being taken up by a birdhouse).
Any increase in them smacking up against the window or do they just shoot for the birdhouses?
There is a huge increase if you don't mark the windows with some kind of visibility method. In my case, these are in the useless parts of the window, so it was easy for me to simply add tiny ornamental wind socks without anyone asking what I was going for in making those windows difficult to use (you know, aside from it being taken up by a birdhouse).