Found in a few eggs. Any ideas?

[Hope16108]

These brown string type material is in several eggs.
Doesn’t look like meat spots as they are more linear.
I was thinking maybe some type of worm. Hate to medicate if I don’t need too. On other hand don’t want my girls getting ill and I don’t want worms in eggs!!!
I believe it’s from the Wyandotte eggs. One started to have a cough but nothing from nose or any respiratory distress. No odd things noted in poop.
Any help would be greatly appreciated.

 

[nuthatched]

Have they had any excess stress lately?

 

[Hope16108]

Have they had any excess stress lately?

No excess stress other than an unusual cold snap.
I should add that my chickens do not free range due to high predator population. A total of 9 birds live in a a 12x13 coop with attached 32x 14 run with sand base.
This is cleaned a minimum of once daily.

 

[nuthatched]

Some hens are prone to meat spots etc in their eggs, if you think it's the wyandotte.

 

[Mrs. K]

I don't think it is worms, I think it is meat spots. Frequent when birds start laying again after the winter break.

 

[Hope16108]

I don't think it is worms, I think it is meat spots. Frequent when birds start laying again after the winter break.

I thought meat spots were darker and more round.
These look stringy. Maybe I’m just freaking out.
Thank you so much for your reply.

 

[aart]

I thought meat spots were darker and more round.

They can be any shape, meat spots are tissue shed from inside the reproductive system.