Adult plumage develops when a bald eagle become sexually mature; it takes five years for a bald eagle to attain solid white head and tail feathers. For the first five years they gradually change; the beak turns from black to yellow, the eyes from brown to pale yellow, body feathers from mottled to dark brown, and head and tail feathers from mottled to solid white. This eagle is close to maturity if you compare it to September 11th posting it’s head is not full white, the beak is not bright yellow or the eyes pale yellow.
