Thin shells and no shells, plus watery droppings

[mrose]

I have a flock of 4. One hen started having laying issues back in March. She had a membrane sticking out of her vent that I helped her remove. Then thin shelled eggs for a while, then these oddly shaped eggs. Then a couple other hens started having thin and no shell/rubber eggs in April and it’s still happening to this day (no pictures of these but I can add them if that’s helpful). The first hen was slightly lethargic the day after I removed the membrane so I isolated her and she perked right back up.

I have done a couple courses (week long) of calcium citrate + D3. They eat Kalmbach layer feed and have oyster shell free choice. They free range. I’ve been supporting with electrolytes, vitamins, and probiotics. I’ve dewormed them. No other symptoms besides a bit of weight loss, but they’ve been feeling bigger since I started actively fattening them up.

From my research, could be a number of things like IBV, worms, egg drop, etc. Any ideas what I should try next or do we think their reproductive tracts are permanently damaged?

 

[Yardfulla poopers]

How old are your hens? Mine seem to all get reproductive issues at age 3-4, despite layer feed and free choice oyster shell/crushed egg shell.
It seems like you are doing everything right. Hopefully someone more experienced can help.

 

[mrose]

How old are your hens? Mine seem to all get reproductive issues at age 3-4, despite layer feed and free choice oyster shell/crushed egg shell.
It seems like you are doing everything right. Hopefully someone more experienced can help.

They are 2 years old

 

[Yardfulla poopers]

@Eggcessive ?

 

[Eggcessive]

I had infectious bronchitis virus, and I did have a lot of abnormal egg shells later. Have you had your hens their whole lives? This link shows a number of egg shell problems and what might cause them:
https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/

 

[mrose]

I had infectious bronchitis virus, and I did have a lot of abnormal egg shells later. Have you had your hens their whole lives? This link shows a number of egg shell problems and what might cause them:
https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/

Yes I’ve had them their whole lives. So far just the one hen with abnormally shaped eggs, but she’s past it and laying normal. Two of my hens are laying thin/no shell eggs.

 

[dearmeghann]

We had two birds pass away from peritonitis. It was so strange and came out of nowhere. No other hens were sick and the only thing that happened was stress from moving them to a new coop (30 feet away.) We tried everything for months, and they both just didn't make it. I've learned (and have been told) that some birds just have reproductive issues.