However, when bald eagles are about 4 years old, they develop their white heads and tails that easily distinguish them from golden eagles. Eagles are very large when compared to most other birds. Their wingspan can be over 7 feet from wingtip to wingtip. But eagles, like other birds, are very light. Eagles weigh only about 9 pounds - lighter than an average family cat.
Eagles have wings that are specially adapted to soaring.
They can stay aloft just by outstretching their broad wings and riding on air currents. This is how they search for food. With their keen eyesight, they can spot a fish from two miles above. They then tuck back their wings and dive at up to 200 miles per hour and grab the fish out of the water.