Well..if the points fall off, they can no longer become frost bit as they no longer exist. It's called self-dubbing and it works the same as if you had dubbed them as a prevention for frost bite. The remaining comb has no more extremities to lose circulation to...usually they frost down to the point where the body cannot provide good circulation in colder weather. The point below that gets enough circulation in cold weather to remain healthy tissue.
Yeah, this is what I thought originally and didn't want to state the obvious as I didn't want you to think I was being snotty, particularly because WBF (?) was mentioning just the skin on Rodney's points.
When I bend over to pour FF into my trough, the food aggressive hens will dart forward and even place their heads right into the bucket as I'm trying to pour..at which time I grab their heads, give a little shake until they are squawking and trying to get away and then I give them a little flip to the side. Just the same thing they do to another hen trying to get to the feeder. It's a language they understand.
Then I stand over the feeder and note anyone climbing into the feeder or trying to run anyone else away from the feeder and just poke them in the side or on top of the back sharply until they get off the feeder and act like they have manners. When everyone is eating side by side and calmly, without pushing or pecking aggressively, then I step back and leave them be.
This only has to be done every once in awhile when a flock member forgets the pecking order...top hen is ME, then comes the rooster, then the rest of them. Sometimes I'll stand over the feeder, pecking them away lightly if they try to approach(tap with the edge of the fingers on the side or back), until they are all standing back politely and waiting, then I let them come in more calmly and in an orderly fashion. These things only happen once or twice a year, usually after a disturbance in the flock matrix/pecking order when birds have been culled, new pullets come into lay and start feeling like big girls. Sooner or later someone needs a lesson on who really rules the roost and I'm not passive about that...it creates a very calm, quiet flock that never has pecking, fighting, injury issues like so many I've read about on these forums.
Just like dogs and children...they seem more secure when someone gives them boundaries and limitations and is consistent on those.