Average life span of an American Bald Eagle (my guesstimate) is between 15 to 25 years...
However, they don't nest in the same location that long. That is only until their young can successfully leave the nest (which can be up to 3 years as that is how long they stay with their parents). Then it becomes abandoned as eagles find a new site. However, they have been known to add to the nest year after year.
Taken from the encyclopedia on-line...
. The nest, or aerie, of twigs and sticks is built at a vantage point high in a tree or on a cliff in a permanent feeding territory and is added to year after year, the refuse of the previous nests decomposing beneath the new additions. The eaglets (usually two) do not develop adult markings until their third year, when they leave parental protection and seek their own mates and territories.!!!
Good luck, Busch Gardens! You can't wait that sucker out if you wanna get rid of it soon!!
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The Great Escape... Soon to become Six Flags Adirondack Escape!!!