I have two groups of chickens. The first group are two Orpington(brother and sister), the second group are three Australorp & Australorp X. I live in the city and the local city council does not allow have roosters, so I found a new home for my Orpington boy. After the depart of my Orpington boy, the next morning I found my black Australorp and my Orpington girl are both crowing !!! Both of them stand on top of chair and stretch their neck try to scream, the sound is not really a full rooster sound, a bit like mixed male duck/goose/hen sound. And I have found they only doing that a few times in the morning, day and afternoon is fine. I haven't seen my Orpington doing that again this morning, but the black Australorp still did it a few times . I have post another thread earlier, most feedback I got assumed my black Australorp is a girl. I am 100% sure my Orpington is a girl because I have obvious compare with her brother. I put them into bed inside coop at night time, but as soon as I let them out in the morning my black Australorp will start crowing. Other than that I think she pretty much look like a pullet to me, even the little noise she make sounds like a hen noise. Her behaviour is like a hen as well, most of the time she laying on the ground, and she is not very active(like my Orpington boy). I have read in some occasion a hen will took over a rooster's place when there's no male in the flock, but my black Australorp is not top of the rank, my Orpington girl is the 2IC. My questions are: 1. Is my Australorp a hen or rooster? (I cant really tell by looking at comb, hackle/saddle feather) 2. How can I stop them doing that in the morning?