That's a good one, I think talk radio or rap would work, the problem is it would run me off too

So far the disks I made are working. But supposedly they only work on Corvids, so probably wouldn't help with pigeons. Maybe you could rent a hawk or falcon, that should put the fear into them.
They seem to be attracted to my G scale items. They pecked some G-scale benches to bits that I had in front of my depot. And they hauled off with some G-scale sheep I had in a pasture setting. And of course they crap on the structures. There is a "gang" of them, about 20+, that hang out in the park behind my house. They often seem to have some sort of gang initiation and decide to reek havoc, which seems to be just for the fun of it as they don't use anything they destroy to build nests and don't eat anything, just tear things up and then leave sqwalking like they think what they've done is funny. Well, it probably is to them
Nothing of what I have is worth killing them, I'd prefer to just scare them off.