Hi, This is just a little hack for an existing bird feeder I had that I didn't want starlings on. They were just too darn greedy, and were scaring off the woodpeckers and long tailed blutits that I quite like in my garden.
Its cheap and easy, but you may need something stronger than just tape if you want it to hold for the long term as it was just a proof of concept. I didn't get round to filming the starlings because they just stopped going there pretty quickly and just hoover up the bits underneath, so don't worry they wont starve! and besides they use the other feeder until i scare them off.
Enjoy!