Do chicken beaks grow back after debeaking?

Answers:
Yes and No. Basically this anwer depends on the age of the bird when you debeak it. The younger the bird the bigger the chance is that the beak will grow back. Battery hens (The common Leghorns that lay the eggs that you buy in the store) and Broiler chickens are debeaked during the first day of their life or shortly after. They do this to prevent the birds form pecking one another to death in the crowded and shamefull places that they keep them in. Then when the birds get older around a few months of age they cut of their tops of their beaks again just to be safe.
Reason why the birds do not bleed to death (Besides clotting blood) Is that when the debeak them they use a hot blade.
As for what LORI K said I have to argue most of it.
First it is not human. And if you think that it is you are well not thinking. The birds beak is one of the most sensitive tissues in the whole animals body. Cutting of its beak is the same as me cutting of our arm. It is gonna hurt. Birds that are debeaked usually live in pain for the rest of their lives. (Most birds that are debeaked don't live very long do to the fact that they are battery hens or broiler chickens and only live so long till they are killed.)
More reason's why it is inhumane. Without the tip of the chickens beak the bird can no longer preen itself. So cutting of the tip of a birds beak is also the same as me saying to you. "Hey sorry but you can't take a bath for the rest of your life." Also when you cut of the chickens beak it hurts the chicken to eat. Just imgine eating with a piece of your top lip missing. Ouch.
Second debeaking isn't needed. If you ever have an death due to cannabalism it is because you don't care about your birds enough to see what is going on. As a chicken owner it is your job to take care of your birds and make sure that everything is running smooth. We all know what it is like to work for someone whom isn't a good boss. Remember that you are the boss of these chickens so be a good one.
There are ways to prevent cannablism. These are making sure they have enough room and food. If you lock up your chickens they are going to attach each other (What else do they have to do) If you allow them to roam freely around the yard they will be busy looking for bugs.
If you have chicks in a brooder do you have to debeak them? Nope. Put some grass in the cage they would rather peck that then each other. Make sure there is enough space between feeders. Use a red light. Once again pecking at one another is them just looking for something to do.
Also broilers not routinely trimmed. Huh? Broilers are trimmed. If they weren't the price of chicken would be going up because half of the broiler chicks would be dying.
Hope this helps, sorry that it is long. But I hate it when people say things and make it seem like something is a must when it really isn't and never should be.

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no.... you debeaked them .....duh!!!=)

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ewww. what the hell is debeaking

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Is that one of your major concerns in life?

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never

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Would your nose grow back if you de-nosed yourself?
: )

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I didn't know a chicken could have it's beak removed without... you know...KILLING IT!?!?!?!?

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No they do not. And it is said that eating becomes a nightmare for them afterwards. Cruel.

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It depends on the method used. Some are temporary and some are permanent.
Debeaking prevents cannibalism, which is a problem among chickens, particularly layers. Because cannibalism is a problem with laying flocks using all widely deployed management methods, eliminating beak-trimming will result in more injuries and deaths due to cannibalism. It is practical to operate a laying flock in this manner, provided that the higher costs resulting from these injuries and deaths are compensated by higher prices. That farmers should receive higher prices on the grounds that keeping the flock under such conditions is more "humane" is open to question.
In broilers, the tendency towards cannibalism has been largely eliminated, and broilers are not routinely beak-trimmed. This has yet to be achieved with laying hens.

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I would say no because a beak is like a tooth so they dont grow back

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I'd think it would depend on how you did it/ how far you cut the beak back. Some methods can stop growth, but some don't.
Beaks continue to grow, they're more like nails than teeth and they're worn down by pecking, from my expierience (I once had a chicken with an overgrown beak that we had to trim, and it kept growing).

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No, they don't. Many people believe this to be a human practice to discourage pecking of other birds, but I think it's just an ugly process created by humans who want to make themselves feel better.
They don't give the birds any type of pain medication, and essentially, it's like pulling out your teeth without a sedative.
Chickens peck because that is how they establish their social hierarchy, their "pecking order". It's normal for a bird to peck at another bird, and it's not to hurt the other bird, but just a way to say, "Hey, I'm boss."
Some people debeak to discourage cannibalism. The thing is, you won't have any cannibalism if you keep a decent sized flock. Poultry and egg industries are the most common ones to practice debeaking.