I never really heard what the fancy term or affliction was, always piebald. Sure makes a wild looking bird though.
Bucky….Most of my feeders are hanging in a pine tree on the north side of the house where the house and tree shade the yard so much grass doesn’t ever get “nice”, so the droppings aren’t an issue there. The other area I have feeders is next to the driveway along a garden edge. Again, droppings are in the garden there and no issue.
Crows and blackbirds/starlings are another matter and I have some small firecrackers in the garage that I’ll light to move them along. If the neighbors” trees are full of them I use a bottle rocket gentling aimed in that direction. If they don’t take the hint my very accurate pellet rifle comes out and….well.