Here she is at 3 days: She's the one on the left. The top of her head was solid black. And, today, at around 17 weeks: The farm supply store sold her as a sex link, but she has just gone through her pullet moult and is still totally black all over. She's bigger than her red sex link "sister" who's the same age (right in the 1st picture) and our Barred Rock pullet who's a month older. Any thoughts?