How do anti-peckers/blinders work...?

[secuono]

I keep seeing pictures of chicken blinders or anti-pecking things that attach to their beak somehow. Never shows it on the bird.
How does it go on? Some have long 'screws' or pins, what the heck?
Anyone have a picture of these things on? I aint buying them, no need, but I'm just curious how they go on. Does it go in their nose...idk..
anyone?

 

[Momo]

You are talking about peepers. The pins go through one nostril and out the other; the "pinless" variety that I've used has two plastic pins that poke into the nostrils (but if a hen were to get hung up by the peepers they would pop off). Photo here: http://www.nationalband.com/nbtgame.htm .