You don't need to die to find them unpleasant. In my senior year of college one of these built a nest outside the library and they would dive at me menacingly

You don't need to die to find them unpleasant. In my senior year of college one of these built a nest outside the library and they would dive at me menacingly when it was warm out. They are at least as big as hummingbirds and behave much more aggressively.