WILL IT NEED ADJUSTMENT?
It is likely that periodically you will need to adjust the fit of your collar to keep it functioning properly. If you've put the Collar on a juvenile rooster, it will need loosening as the rooster grows.

These neckbands are used to lower the crowing of the rooster. At the start, your bird may become a little uncomfortable and you will see a change in behavior. You need to keep an eye on him in the early hours. when you put on the band on the bird, It should be tight enough that your little fingertip can fit in it.