The photos below were taken of clinic patient eagles. You can see the pattern that is different/present on different ages of eagles.
|Tail feathers of a second-year bird.|
|Tail feathers of a fourth-year bird.|
|Tail feathers of an adult bird.|
The first photo is of a bird in its second year. The next is of a bird in its fourth year. And the final is that white tail that you all recognize.