On another whim, I moved the Evil concrete perch with the F.A.D. attached so that the perch is about an inch and a half from the floor of the Finsterium. This way, the Finsters should be able to stand on the floor, reach up, and get the tasty seeds. They won't even have to touch the Evil concrete perch. Maybe, just maybe, they will learn that the concrete perch isn't evil, after all.

Of course, there are no takers yet.