What does an eagle have to fear when they can eat or escape from all comers there is much in the way of sparrows who are here to tell you get away from my nest off this lawn and there are so many for we are we and you are one that you might make it but one of your eyes may not and then you won't even see us coming though the eagle and depth perception are unknown factors as fear is a depth of perception whose option is chosen at peril to make the world appear far away and too close to handle.