My Rhode Island Red is roughly 7 weeks old, is it too early to know if it's a girl or a boy? Is the curled tail a clue? This is the sweetest of the chicks and I really want it to be a hen! The grey chick is about 5 weeks old, and I have no idea as to the breed. We got two of these chicks from the breeder, she had been given eggs to hatch and forgot what they were. The only thing she was sure of was that they were pure bred and one of the large breeds. One of the chicks has an extra toe.