Eagles in Washington

We went up Hiway 20 today to see the eagles. We went all the way to the village where the workers live who manage the dam. If you enlarge this picture and look closely at the bird, it has a white head and a white chest.
I looked in my bird book and it could be a 3rd year bald eagle. They still have some white on their chest and are getting the white head. Anyway, it looked very strange!