2. Bald eagle is also called American eagle. It is beautiful in appearance, but fierce in temperament. A fully mature sea eagle has a body length of 1 m and a wingspan of more than 2 meters. Adult vultures have plump feathers on their heads. Its biggest feature is that it has two white heads, namely a white head and a white tail. The feathers in other parts of the body are dark brown, very gorgeous and beautiful, and are known as the "king of birds".

The United States is the first country in the world to determine the national bird. The bald eagle first appeared on the American flag during the War of Independence. 1776 On July 4th, the Second Continental Congress issued the Declaration of Independence, which decided that the new America must have a special national emblem. 1On June 20th, 782, the U.S. Congress passed a resolution to regard the bald eagle endemic to North America as the national bird of the United States, and take this bird as the main body of the national emblem, representing courage, strength and victory and symbolizing supreme sovereignty. Today, the national emblem of the United States and the military uniform of the United States both depict a vulture, with an olive branch in one foot and an arrow in the other, symbolizing peace and powerful strength.

Although the vulture is a symbol of the United States, it is on the verge of extinction in most parts of the United States. In recent years, after hard rescue, it has steadily resumed reproduction. 1970, the number of vultures in 48 States in the United States was about 1000, and now it has reached about 5000, and the number is still growing. In view of its extraordinary value, the vulture, as the national bird of America, is protected by law. 1982, President Reagan declared June 20th every year as Bald Eagle Day, in order to attract national attention.