Pigeons aren’t geniuses. But they aren’t totally dumb, either. They fear sudden movement. They fear shiny things. Enter: the CD defense.
Grab old CDs. String them up from a branch. They catch the sun and flash like a mirror. To a pigeon, this looks like a thousand angry eyes. It’s cheap, it’s lazy, and it works.
Bonus: The Owl Decoy (But Do It Right)
Buy a plastic owl. Place it on a post. The pigeons will laugh. They don’t fear static owls. But move that owl every two days? Suddenly it’s hunting them. They spook. They leave. Motion is the secret.