I have some five week old welsummers and I am noticing that one looks completely different than the others. Is this a completely different breed or is it just a weird looking welsummer? Is it a sign of a rooster? They are both supposed to be a welsummer pullets and the one on the left, I believe, is a welsummer. The one in question is the one on the right that is very dark. I just noticed that her striping is different than the other two and is also bigger.