And that's their real danger - they can't be killed. U.S. federal law prohibits the killing of bald eagles. We can only assume that applies to their robotic counterparts. Human legislation will lead to our demise. We'll have only ourselves to curse as the Birdtrons bear down on us, finding our every hiding place, anticipating our every move, until one day the last of us look upon this scorched earth with weary eyes and wonder what it was all for.