hmmm, I'm skeptical. Did you hatch these little cuties yourself or get them from a hatchery?
What is making me skeptical is that s/he has a very dark, crisp outline of the head markings, but its not in a 'v' pattern. The boy Wellies I have seen (albeit not that many) have been a more faded or lighter colored 'v' but it still looked like a 'v'. I am wondering if you should post a picture of this one's head markings on the Welsummer thread in Breeds,Genetics and Showing, and see if breeders that see lots of little roos can give you a better answer.