I keep ending up with all these weird situations 
So, I have been having issues with a few things in my flock. One is, a few hens have messy bums, soft poop/diarrhea. I thought this was a separate issue from the shell less eggs I have been getting. I also have one hen that lays very rough shelled eggs.
So the other night, I was out in the coop after dark collecting eggs, locking up and there was an egg on the poop board. I have been getting eggs on the floor, in the run, and on the poop board. They were all roosted for the night so I made a mental note of what hen was directly over the egg on the roost as it was a very rough shell and I was interested in knowing who was doing the rough egg shells. I slipped it in my pocket and went about my things in the coop and that same hen laid a shell less egg right in front of me! Just plopped out!
I know EDS (Egg Drop Syndrome) is rare in the US but hear me out. We live on/around some wet lands. And recently the ducks have been back from their winter homes. They are said to be asymptotic but carriers of EDS. I’m nervous this is what I May have in my flock now. Could it be? Has anyone heard of this before? It seems to fit my current issues minus the rough shells (I think).
FYI My hens diet is this:
Nutrena All Flock pellets
Free choice Oyster shell and Grit offered in 2 separate containers
I switch off with adding ACV, Molasses, (equine)RedCell, and a electrolyte/probiotic Mix, in their water and also offer plain water.
Minimal free range currently but I have been getting them out more the last couple days. (Its really high predator traffic right now)
Minimal snacks, maybe once a week if that.

So, I have been having issues with a few things in my flock. One is, a few hens have messy bums, soft poop/diarrhea. I thought this was a separate issue from the shell less eggs I have been getting. I also have one hen that lays very rough shelled eggs.
So the other night, I was out in the coop after dark collecting eggs, locking up and there was an egg on the poop board. I have been getting eggs on the floor, in the run, and on the poop board. They were all roosted for the night so I made a mental note of what hen was directly over the egg on the roost as it was a very rough shell and I was interested in knowing who was doing the rough egg shells. I slipped it in my pocket and went about my things in the coop and that same hen laid a shell less egg right in front of me! Just plopped out!
I know EDS (Egg Drop Syndrome) is rare in the US but hear me out. We live on/around some wet lands. And recently the ducks have been back from their winter homes. They are said to be asymptotic but carriers of EDS. I’m nervous this is what I May have in my flock now. Could it be? Has anyone heard of this before? It seems to fit my current issues minus the rough shells (I think).
FYI My hens diet is this:
Nutrena All Flock pellets
Free choice Oyster shell and Grit offered in 2 separate containers
I switch off with adding ACV, Molasses, (equine)RedCell, and a electrolyte/probiotic Mix, in their water and also offer plain water.
Minimal free range currently but I have been getting them out more the last couple days. (Its really high predator traffic right now)
Minimal snacks, maybe once a week if that.