I'm having an ongoing battle with the little blighters myself.
They've happily gnawed through the wire mesh of the steel peanut feeder and eaten the plastic feeder holes off the seed dispensers.
I've duplicated the latter with fittings made from some leftover 22mm copper pipe, which has slowed em down a tad, though there's still deep gouges in it.
Next solution was to take the pole off the feeder hangers, and suspend it from a wire hanging out of the neighbour's tree. That failed, they can jump further than I thought. Ho Hum
One much vaunted solution is to add hot chilli powder to the peanut and birdfood mixes; apparently birds don't have chilli receptors, but squirrels do, so I tried liberally coating everything with extra hot chilli oil. The Buxton sub species seem to love Mexican peanuts; I think I'm up to plan G now.
I did make a solid oak bird table with a slate roof, and have slowed them down a bit by blocking the open sides with galv wire mesh, but a couple of times, Jane's found one trapped inside; presumably squeezed in through the mesh, gorged itself stupid and then was too big to escape.
Maybe time to try a longer pole and a Slinky.
Edited By peak4 on 20/06/2017 10:00:08