wrinkled egg - on and off for a couple weeks???

[Bbailey1]

Hi, I have a year old RIR that has been laying wrinkled eggs, some more wrinkled than others for the last couple of weeks. I cracked them open to see if the whites are runny but they look fine, I even cracked 3 different eggs from 3 different chickens today and lined them up to see if their was any difference. they all looked the same.
I've read up on IBV but my chickens show no other signs. I provide them with a complete diet and oyster shells and a vitamin mix for their water too.

should i be worried ?!

thx B

 

[Mei&Popcorn]

If your hens are stressed, their eggs may come out abnormal. Has there been bad weather?

 

[Bbailey1]

We've had sporadic weather, rain, wind and cold -10 and then sunny blue sky weather +8 over the last couple of weeks ?! could this stress only one hen more then the others do you think? i did read the stress could cause this to happen too .... hmmm

 

[Mei&Popcorn]

That's probably the cause...