For those laying sort shelled eggs you can give them calcium orally. Some people give tums, I give calcium gluconate that can be found in the cattle section of Tractor Supply. My average sized chickens (5 pounds) get 1ml of calcium gluconate orally a few days in a row and that usually enough to get them laying properly again.Well I have had 4 chickens to lay soft shelled eggs so I think they aren't eating the extra oyster shell left out for them maybe to big dont know, but we crushed some up and put on food to try to get some back in them, my sick chicken seem to be doing very well when can I put her back w flock I have been letting some hens out with her so they stay acquaint but I was concerned about the rooster if she could handle his harassment.
If you have smaller or larger chickens you'll need to do a little math.

Number of pounds divided by 2.2 (that converts pounds to kg) times the desired dose of 100 divided by the number of mg in one ml, which for calcium gluconate is 230. The formulas looks like this:
One pound hen
1/2.2 x 100/230 = 0.2ml (rounded up from 0.19762845849)
Ten pound hen
10/2.2 x 100/230 = 2ml (rounded up from 1.97628458498)
-Kathy
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