I have 6 hens, about a year and a half old. One (Delia) was recently in the hospital b/c a soft shelled egg collapsed in her. She did expell it but it was infected and she was on antibiotics for 10 days. The past 4-5 days I have seen eggs without shells on the poop boards. I can't say for sure it's Delia b/c I saw her in the nest box today. I give the girls free choice oyster shells and they get yogurt fairly frequently. Anything else I can do for them to help with the soft egg situation? BTW hope everyone has a Happy New Year!