We have starlings that attack our bird feeders, and we usually frighten them off and shoot them with the air rifle. This is legal because they are invasive, non-native birds that take over native bird nesting areas.
Anyway, I noticed that they brought like 4 waves of babies to the feeders this year --I hear that starlings make fantastic pets and as I've always wanted a crow (illegal unless you purchase an imported, captive bred Australian species), and these are another little intelligent corvid, I would love to raid a nest and take a clutch to raise. It would also be nice if I could find and destroy nests with eggs in them to help encourage the starlings to leave.
We have other precautions against them, as they seem to like the suet that we have for the flickers and pileated woodpeckers the best, so we made a hardware cloth holder that will only accomodate the longer beaks of the woodpeckers and that keeps them away for most of the time.
(oh, one of the reasons we don't like the starlings up there is that they come in big groups, are incredibly loud, demolish and spill all the food, poop like crazy on everything and chase away our beloved evening grosebeaks).