Herb Kephart wrote: Remember that eventually rain will wash bird poop off.
We cover all kinds of technical s##t here!
Ever try to get that stuff off your car after a nite of a sitting flock in the branches above your vehicle. Maybe a pressure washer gets it off after a soaking with dishwasher detergent and water.. That's tough S..t .
Here's a pic of my poop on the top of a G Scale building billboard. I need to add some on the roof too. As far as birds are concerned, if you want O or G scale, you can get tiny plastic dove-like birds from websites that sell wedding supply do-dads. I got a bag of 12 for super cheap. They come in white, and you can paint them anyway you like.