I am new to the site and to be honest don't know much about chickens but have been getting a crash course. At an easter egg hunt they were giving away free chickens and my son got attached. Well one thing led to another and we have 6 beautiful chickens. We were told when we got them that they were all hens, but I don't know breeds etc. One of our chicks has seemed to grow quicker than the others with a larger comb. I had been worried that maybe it was a rooster, but she does not have a spur on the back of her leg. Since the rest of them have only begun to sprout their combs I couldn't compare--I just assumed she was older than the rest (they are all from different breeds). Today the neighbor told me that the chickens woke her up at 5am crowing...could "she" be a rooster? If so, when do they start mating...will my chicks (who are probably about 16 weeks old) lay fertilized eggs, or when does that behavior start??