American Bald Eagle, US National Emblem
The bald eagle was chosen June 20, 1782 as the emblem of the United States of America, because of its long life, great strength and majestic looks, and also because it was then believed to exist only on this continent.
It is said the eagle was used as a national emblem because, at one of the first battles of the Revolution (which occurred early in the morning) the noise of the struggle awoke the sleeping eagles on the heights and they flew from their nests and circled about over the heads of the fighting men, all the while giving vent to their raucous cries. "They are shrieking for Freedom," said the patriots. --Maude M. Grant