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Adding calcium/ crushed shells to their diet will help, you can also buy a water soluble tonic to add to their water that will give them the optimum amounts of vitamins and mineral they need to produce hard egg shells. Young hens will produce the hardest egg shells and older hens at the end of their laying years will often start to lay soft/ rubbery eggs.

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13y ago
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13y ago

To hard boil an egg, add it to boiling water for five minutes. Three and a half minutes for soft boiled.

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Q: When does an egg shell harden?
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What does condy's crystals do for chickens?

It helps harden the egg shell


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the shell of an egg


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This is an egg that can be in a shell and out of a shell.


Is an egg shell?

the shell of an egg


How is yolk formed inside an egg?

The yolk - is formed within the bird's reproductive system. As it travels through the bird's body, the shell is created from stored calcium and other minerals, which harden as soon as the egg is laid.


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egg shell


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A leathery shell is a shell that is flexible rather than solid like the shell of a bird egg. A snake's egg has a shell that is flexible, as does a turtle's egg.


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by lap dancing renzmtrovela: because the egg white and egg yolk is made before the egg shell it puts the egg shell around it


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Lack of humidity


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Yes, by boiling an egg, the shell will be damaged when an object is inserted into the shell or the egg.