Hi! I am new to raising chicks. I bought to Sapphire Sky chicks. I can't find much information about how to tell if they are roosters or hens. They are much larger than my jersey giants and orpington but maybe that's age. They also have white/yellow dots on their heads and yellow legs with brown marks. I know those traits indicate rooster for sapphire gems but I don't know if the same applies for Sapphire Sky's. Does anyone have any experience with this?