It is a mystery

The lasers move randomly, both on the horizontal and tilting up and down and I would say it's decently fast maybe rotating fully around every five or seven seconds. They are mounted on poles, ten to fifteen feet up so they are above the tops of whatever crop you are trying to protect so it keeps the birds from entering the field. Apparently they think the laser is solid. They also use laser diodes, which are not the same thing as laser pointers, the diodes are much stronger.

There are commercial laser scarecrows that cost between $5000 and $10000. This is a DIY thing based on the University of Rhode Island research done by Dr. Rebecca Brown to make one for less than $500. There's a lot we still don't know, how far it will cover, will it need more lasers, how effective is it on slopes, does it work on all bird species. So this one is for my parents for their blueberries.