There are different ways to sex chicks. Barred Rock pullets have a more defined roundish white mark on their heads. The cockerals have a more mis-shapen mark. Look at the wing. If there are two rows of feathers then it is a pullet. One row is a cockeral. We also use the method of turning the chick over in your hand. Allow the chick to lay on its back in the palm of your hand. If it continues to kick it is a cockeral. If it lays like it is napping then it is a pullet.
