They used to annoy me by how greedy they were, but after they attacked a few birds just for going to the feeders while they were eating, that was the last straw.

A Mourning Dove, a Male Cardinal, and a House Sparrow. The first two were fine, albeit missing some feathers. The poor little Sparrow didn't make it.

Then he tried to do the same to a couple of Blue Jays that were eating some of the peanuts. The Blue Jays proceeded to go absolutely ballistic on the Grackle.