Sofia Salazar
In the Brooder
A rooster would always be a rooster so he will find the way of crowing even with the collar. The collar will reduce the volume and frequency of crowing as it limits the force of the air and makes the crow quieter. Sorry to tell you that it will not stop him from crowing. I have the “no crow” collar on my ayam cemani and he crows all day just with lower pitch.