Here’s a tip from an architect on Cape Cod, MA. He stretches monofilament fishing line or fine wire between air terminals (lightning rods) to prevent seagulls from perching on the ridges, parapets, and other high places on his buildings. The birds don’t like flying into the almost invisible filament or wire, so go elsewhere. This allows the air terminals to do double duty, protecting the building from lightning plus bird droppings.
Photo Credit: Dennis Jarvis