Reminds me of walking into a big box hardware store "this side of the swamp". Seagulls way up in the air. Hundreds of them. Noticing that most cars parked in the lot had bird poop on them. Then all around me I hear little splat-splat-splats. Got bombed on my shoulders, head, arms.
Jesus!
An a brighter note. If bird crap was an issue on my dish, those little spikeys on top insulated from the dish and wired. Or perhaps 2 or 3 closely spaced wires on insulated stand-offs arced over the top of the dish and a solar fencer would do it. That'd pucker up their bomb bays. And have me eating crow for dinner!