But, does it ever get back at those elegantly dinner-jacketed assassins, namely, magpies?
Don't know about that, and we don't have them around here (in the US they're out west) but they certainly are elegant looking.. and are supposedly one of the few species of bird that will usually pass the "mirror test" for self recognition, i.e. if anesthetized and then marked with some paint, then wakened and shown a mirror, will investigate their own body after seeing the mark on themselves in a mirror.
I suppose that could come in handy if a magpie is fastidious and doesn't want to leave marks on itself after doing away with some other hapless bird...