We have 7 hens just over 20 weeks old. We started getting a couple eggs 3 weeks ago. We’ve been getting 1 or 2 soft shell eggs on the poop shelf for 10 days. Now today 4 soft shell on shelf. I am so discouraged! They have oyster shell in the run, they have a nice woodsy area to free range and dig around in, I dry egg shells and crush them up, I ferment their mash. I bought some Tums but unsure if I should give it to all of them, since I don’t know which chicks are doing it. Or am I being impatient and should just wait it out?