We had 4 chicks born the first of July. All different types and we thought all hens. One of them started developing a bigger comb and its tail seemed to stick up a little more. But I told the kids we wouldn't know for sure untill we heard it crow. Guess what I heard this morning?!! It was more of a racket than a cockadoodledoo, but it was definately a crow!! Guess wer'e set, 3 hens and a rooster, and a male and a female Guinea. What luck out of an assortment of eggs .