My Black Giant cockerel finally started crowing. He has the true "cock- a- doo- dle- doooo" sound while all of my other cockerels and cocks of various breeds (EE and true araucana) have a four syllable crow (more like "er - er- er- errrrr). I am sure the black gaint will refine a bit as he gets older, he so far has a very deep voice. Quite honestly, he sounds pretty awesome now but does not crow as much as the older boys. Is the syllable/sound a genetic trait or is it linked to certain breeds?