Our girls are a couple weeks shy of being 6 months old now. We clearly have 7 red sex links and 1 black sex link, who have all been laying for almost 3 months now. And we have our one Blue Andalusian who finally started laying. But we have one hen left who is still not laying - and yes, we're sure. We've thought all along she was a black sex link except that over the past few weeks she has just kept gaining weight. She is twice as wide as any of the other girls - and weighs 1-2 pounds more. She's sweet as can be but it just different somehow. I was looking through old pictures today and realized that when they were younger and you could clearly see their ears - she has white ears, instead of the red ones her 'sisters' have. And she really doesn't have any pure red feathers like the others - she has mostly red lacing. Is she a black sex link? Maybe a different cross than the other one? Or maybe something else?