This is going to be harsh - but Don't feed it. Humanely euthanize it - it is a starling: they are Not native to North America and they compete with our native birds for nest sites (woodpeckers, flickers, particularly bluebirds among others). I've been fighting with a pair over a nest cavity for more than 1 month - so far they are winning. They kicked a pair of red-bellied woodpeckers out from the hole the woodpeckers excavated. When a N. flicker tried to use the hole, the starlings kicked the flicker's butt too! Personally, I'd much rather have woodpeckers and flickers than starlings. You can euthanize it humanely by putting it in a plastic bag and hold the bag up to your car exhaust and fill the bag with exhaust (carbon monoxide poisoning). Only takes a few seconds - very quick. Preferably with a cold engine so the exhaust is not so hot.
Please don't ban me for suggesting this.
Chica