Not sure what you mean by this but he is a white and black bird, if he has a little yellow hue to him it might be from the sun (the feathers can change color some and its called sun bleached) or due to feed. Other than this I have no idea what you might be asking, so I hope this is what you are referring to.What about the light feathers? I thought they were white feathers that "aged" or got dirty, but could it be that they are blondish?
