I have a new black EE rooster, who is supposed to be about 4 months old. Very pretty little guy! His feathers have a purple, pink and turquiose hue to them. Today, while visiting with him, I noticed a few little brown feathers on each side that I had never noticed before. I guess my question is...how long before they are done feathering out and look like they are going to look as full grown adult birds??