I have a trio of black Cochin Bantams, I am fairly new to the chicken hobby, so I don't know much. My question is: Are Cochin roosters supposed to crow differently than the rest of the chicken breeds? We have a phoenix rooster as well, he crows the typical very deep" EEr Er Er Eer ER", But our Cochin rooster has a very high noted "Er ER Er er". Is this normal or is there something wrong with him?