A Bald Eagle completes the nest to prepare a home for birthing two more eaglets. Bald Eagles mate for life and like to build a very large nest in a tall cypress tree.  Once built the pair will return to the same nest for eight to ten years, adding new branches and large sticks. The largest Bald Eagle nest found in Florida was 9 feet across, 20 feet deep and weighed over a ton. With over 1,200 nesting pairs, Florida has one of the largest population of Bald Eagles in the United States, excluding Alaska.