I was wondering...are the Langshans part of the long crower family? I have 2 pairs...a white and a black pair. The black Roo...is just learning to crow, and boy does he drag it out...I mean...when the other Roos crow it lasts like 3 seconds....Ebony's crow...is like 6 seconds long...he really hangs on to that last "dooooooooo" Is this normal for this breed???