Any time a pigeon sees a laser beam, It's going to Consider it’s a predator and fly away. Just jiggle a small laser pointer within the way of a pigeon to spook it away harmlessly. Shock Track. Several suppliers give you a “shock monitor” technique to keep birds off balconies. https://elliotaj1k2.ageeksblog.com/31326129/top-guidelines-of-pigeon-control