It just seems excessive. There are six roosters about 19 weeks old. They all get along reasonably well (so far). I expect them to crow when the sun starts to rise at about 6:30, but one of them starts around 5:00 every day. I mean its still pitch black out, but he crows every morning at that time. And then sometimes the others decide they want to get in on it too. When that happens they seem to get into a competition and it goes on for longer than usual. Then around 5:30 or so they stop for awhile and resume when the sun starts to rise. Is it normal for them to start early like that?