100% kill rate, since its a strap on Velcro collar with no give...
Just being honest, since I looked into then a while back, and after reading numerous cases of the bird choking or getting it caught on something, I have banned it for on even being spoken of around here
It seems like a great idea, IF you have a rooster that you can watch 24/7 to make sure he isn't choking, etc... I just can't take that risk and warn accordingly.
We are each responsible for our "flocks", so its always the owners call. But its good that you're looking for opinions first; you may have less paranoia than I, lol, and if you try it and it works, then great, but make sure you feel 100% comfortable with doing it, since you'll really kick yourself if you have doubts and something bad happens.
Edit* that sounded harsh... When used PROPERLY, I would think they could be perfectly safe, but IMO, they are not something that can be used safely by everyone. I hope that makes sense without offending Edited by shortgrass - 12/29/15 at 4:08am