just digging up this thread to say I decided to try a no crow collar. Good tip on the bird growing, I would not have thought to check it periodically but so far I am very impressed.
I tried it on a big bird before but it didn't really work on him, have now tried one on a bantam and it hasn't stopped him able to crow or damped it much (a little) but so far instead of crowing every hour he's only crowed twice today so big improvement so far.
It's mad how all my cockerels have a distinctive crow, I can identify each one by their crow, one sounds like an old squeaky door (my favourite), one sounds like a small cockadoodledoo but the third one, it sounded like a baby crying! Couldn't take it no more. He has beautiful colors but nobody wants to hear what sounds like a aby crying all day.
I think squeaky door might be next as even though he isn't too loud he is starting to crow too much.
I'm surprised it's worked so well and I know people are not in favor of them, me either but definetely better than him crowing too much or me having to get rid of him entirely.