These chicks are about two week old, I know it is way to early to tell gender most ways but I am wondering about the coloring on the wings. I have never owned a Langshan so I don't have a clue as to what they look like as they grow. I have one with the light coloring all the way and then the other three have dark wings and tail feathers, does this likely mean a rooster?? Thanks in advance for taking the time!!