Mossflowerwoods, You have had a couple of replies about proper feeding for good shell quality, and debeaking. I have copied below two paragraphs from some previous writing of mine that elaborates on these posts:-
I have heard of people feeding their stock some weird and wonderful things, yoghurt being one that regularly comes around. Why this should ever have come into being is a mystery to me because one thing I am certain that hens will not take in nature is milk, and I cannot accept that the bacteria in a live culture that might benefit a mammal, can do any good to a species not adapted to use such organisms. Grit, either soluble or insoluble comes into the same category. Extra calcium can give you more problems than it is intended to solve. Upsetting the calcium

hosphorus ratio as formulated by the makers of your layers feed will affect the composition of the egg shell. Depending on the excess amount taken by the hen, this results in shells of poor quality, often thin or soft (the very reason that oyster shell or limestone is fed in the first instance by those who use it) and in extreme cases can lead to morbidity and death. The label, or other information printed on the feed bag, should tell you whether you need to feed grit. If it does not tell you, then ask the manufacturer (not the person who supplies it to you) before giving your birds any extra calcium. A properly formulated layers ration should supply sufficient calcium to meet all the requirements of a hen in full production. Free ranging poultry should be able to pick up sufficient insoluble grinding material for their gizzards, so again I see no point in buying the stuff. Permanently housed hens that are fed whole grain are an exception and will need insoluble grit for the grinding stones in the gizzard.
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From time to time you might meet with an egg-eating problem. If the hens are properly and adequately fed this should be an extremely rare occurrence. If an egg is accidentally broken then it will be greedily devoured in its entirety, but if you produce eggs with good shell quality as a result of your good management of your flock, then it takes a very determined hen to break the shell. If you find a number of eggs have been eaten and you are certain it is the hens purposely breaking the shells, and not some other cause, then clipping the top mandible of their beaks removes their tool for breaking the eggs. As with your own finger and toenails you will be able to see how much can be cut without causing injury to the bird. It is common for many hatcheries to do this job soon after the chicks are hatched, except they tend to go a bit further and the mandible never grows back properly.
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NOTE: Mfw, It is probably easiest for you to tip the beaks of all the hens rather than spend further time trying to identify the culprit(s). Human nail clippers do the job adequately.
Colon p should replace the funny face.