She’s about three months and she was pretty white until she went to live outside full time. This is when she was about two months and was outside for a few hours a day; otherwise, still in a large pen inside.I don't think she is dirty, that is not what dirty birds look like. I think that is the color of her feathers. Often times they change color slightly when they molt. The juvenile molt can change this. I do think this is the color she will be, maybe getting more yellowish as the years go on.