I bought several chicks from Tractor Supply labeled as black sex-links. The chicks looked right, but the pullets looked like Barred Rocks, black and white striped. Everyone's photos look red and black instead, which I thought would be red sex-linked. So what do I have? Given that, when do they usually start laying? They are now 19 weeks old. No eggs yet. I have had Wyandottes before, both bantam and standard, and they had started laying by this time.