The Starlings expend so much energy squabbling I'm not surprised they are so greedy and take such a large share of the food I put out. They must use up half of what they eat in keeping others away from their favourite food.
All this noise and flapping of wings doesn't put off the smaller birds though. They bide their time, choose their moment and swoop in to grab a tasty morsel and are away again before the Starlings notice. Even the tiny Coal Tits dive in to get their share.