... has been a dick to all the rest pecking chasing and a few times biting necks till screaming starts from victim.
the one that crows has been making sure all the others go in coop before him at night like he is watching over them but he will have to go.
These are both talking about the same bird, right?
Despite his responsible behavior at bedtime, his other behavior sounds like enough of a problem that I agree he should be one of the ones to leave the flock.