When Bald Eagles (Haliaeetus leucocephalus) are born, they have brown heads, brown eyes, and a black beak. It takes about five years for them to develop the characteristic white head, pale eyes, and yellow beak that we associate with adult bald eagles. Certain changes take place each year and it is possible to estimate the age of immature bald eagle on the basis of its appearance.
I believe that the eagle depicted in the two two photos is about 3 1/2 years old. There is still a good deal of mottling in the feathers on its chest and some brown patches on its mostly white head. If you would like more detailed information about the developmental stages of bald eagles, I highly recommend an article by Avian Report entitled “Juvenile & Immature Bald Eagles.”
I do not see eagles of this age very often at Occoquan Bay National Wildlife Refuge, where I took these photos last week. Most of the eagles that I see are adults or are a year or two younger than this one. From what I have read, eagles reach mating age at about the same time that they get their white heads and tails, so I doubt that this eagle has already found a mate—in human terms, I guess the eagle might be characterized as a teenager.
© Michael Q. Powell. All rights reserved.
Mike Powell 
Wonderful captures, Mike, and what a great pose to really see the bird’s colors. We don’t see them at this age very often either, perhaps due to that great camo.
Thanks, Ellen. That mottled look really does help them to hide, especially if they choose not to perch in the open.
He’s actually quite beautiful with those markings. A lot of them just look patchy and strange.
I think the years when they are stuck between childhood and adulthood is an awkward phase for bald eagles, especially when it comes to their appearance.
The teen years are awkward for everyone, but I think you’re right, they seem to be especially awkward for young eagles.
So interesting!
They are coming back to stay New England which is truly a comeback story much like our wild turkey they are everywhere 🙂