How long has the bald eagle been the US symbol?

Answer 1

The bald eagle was chosen June 20, 1782 as the emblem of the United States of American, because of its long life, great strength and majestic looks, and also because it was then believed to exist only on this continent.

Answer 2

The Continental Congress adopted the bald eagle as the national bird on June 20, 1782.
The Bald Eagle officially became the emblem of The United States of America on June 20, 1782.
The bald eagle became the national bird in 1782. This is the same year that the national seal was adopted, which had an eagle on it.
June 20, 1782.
Since 1782

Answer 3

Since 1776