From the Pteropundit

CDs used to discourage birds from perching

The courthouse steps in Lisbon, Ohio, were getting covered in pigeon poop. (At least it wasn't cormorants.) So the commissioners turned to CDs to get rid of the pigeons.

I read the headline and I figured they played the new Cristina Aguilera album at the birds and scared them away. But no, they took used CDs and hung them by fishing line from the tower they're trying to keep the birds away from. The disks reflect light which scares the pigeons. I wonder, though, about what happens at night.