I was gonna say the no crow collars basically choke the rooster every time he raises his head to crow. Some members have had them strangle their birds. So they aren't "harmless". 

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If you can't readily handle(pick him up) the bird, I would not put a collar on him.I’m going to try out the no-crow collar first. If it doesn’t work I’m then going to give him away. However, he is not the friendliest rooster, so I do not know how I am going to get him off the ground to put the collar on. Any advice on how to do that?