Scrumbly-shelled egg

[BigBlueHen53]

Sorry, I don't know what else to call this, lol! This egg is not smooth-shelled like a normal egg. I will post a pic in a few minutes. It looks like it was made by a little kid out of lumpy clay. It's extremely rough and knobbly. So my question is, do I have a sick/ dying hen? Nobody is acting out of sorts. Based on y'all's responses, I may go out after dark tonight and try to palpate everybody's abdomens and see if I feel anything funky or abnormal. Thanks for your responses, suggestions and advice.

Oh, background info. I have 5 Brown Leghorns and 7 or 8 EEs, 21/2 years old. I also have 7 or 8 Black Australorp s, 1 1/2 years old (they were all hatched in early March of their respective years). Sorry, hit post too soon. More info follows.

 

[cherrynberry]

Do any of these look like your egg? https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/

 

[BigBlueHen53]

To continue: we feed all-flock available at all times and a handful of scratch every afternoon. They live in a large run with lots of wild greens, and we turn them out every afternoon about 3:00 to forage on bugs and additional greens. We have one rooster who is not hard on them. They have grit and OS at all times. Anything I'm forgetting?

 

[BigBlueHen53]

Do any of these look like your egg? https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/

Not exactly. Stand by.

 

[BigBlueHen53]

We got one of these yesterday too. Should I worry?

 

[cherrynberry]

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We got one of these yesterday too. Should I worry?

Looks kind of like a corrugated shell. How does the inside look?

 

[MysteryChicken]

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We got one of these yesterday too. Should I worry?

This looks like your egg.

 

[BigBlueHen53]

Thanks for that link, @cherrynberry! I read the whole article. About the only thing that seems like a possible cause is age. We haven't had any new additions to our flock, so Newcastle disease doesn't seem likely.

 

[BigBlueHen53]

Yeah, I saw that when I read the whole article. Let me go look again, hang on.

 

[cherrynberry]

Thanks for that link, @cherrynberry! I read the whole article. About the only thing that seems like a possible cause is age. We haven't had any new additions to our flock, so Newcastle disease doesn't seem likely.

Have you been using antibiotics?