My two week old Orpie chicks are finally getting their wing feathers in, and I am noticing that two of the six have brown wings that look kind of patterned instead of the creamy buff color that the other four have. The patterns are kind of like a light to medium brown with black markings. Is this normal? These are my first Orpingtons. They are bantams too, if that makes a difference. My neighbor has Buffs and while her birds colors vary a little bit, they are still all buff in color. Their heads all look the same, all six of them, and all are sweet as Georgia peaches. I don't have pics, sorry, I broke my camera by dropping it on the lens but if anyone knows something about this, I'd greatly appreciate hearing about it. Thanks!