My 5-6 week old chick is crowing, I just couldnt believe what I was seeing/hearing. The chicks are in a pen with the other chickens but separated and today one of the little ones with a larger comb then the others crowed like 5 times in a row after hearing the big rooster crowing. He puts his neck out straight all the little feathers stick up and a long chirpy screech sound comes out. I thought something was wrong with him at first but after watching him I realized he was attempting to crow and producing at least some kind of sound. Hes very protective of the other chicks and somewhat aggressive. Should I be worried about a hormone/chemical imbalance or is this perfectly normal.