Why is hens producting Bulls eye like oval shapes on different hens eggs??? it's winter here

[Bunnyla]

I will post some pictures, At first I saw only one hen's egg this way, now I have seen all 3 hens eggs have a bulls eye white design on one side of the egg... originally I thought t was cause they were laying near the heat lamp, but the other day it was found in the nesting box. recently the bedding of shavings has a mix of a saw dust powder look to it?
Should I be Concerned? are those eggs eatable? it has been getting cold lately in the 20 and teen degrees and I have one heat lamp in the coop.
Please let me know your thoughts????

 

[donrae]

I don't think it's the hens, I think it's the environment. Are the boxes or wherever the eggs are damp at all?

And yep, they should be fine to eat. Even if it were the hens, shell quality issues don't effect egg quality.

 

[Isaac 0]

1. White banded egg

These eggs are the result of two eggs entering and making contact with each other in the shell gland pouch. When this happens, normal calcification (egg shell formation) is interrupted and the first egg that entered the pouch will get an extra layer of calcium, seen as the white band marking. Causes for this are:

- Stress in the flock;

- Changes in lighting, for example adding artificial light in the coop to encourage laying over winter;

- Diseases such as infectious bronchitis.

link- https://www.backyardchickens.com/a/common-egg-quality-problems


I would turn the heat lamp off as the link said those eggs can be due to artificial lighting.

 

[Blooie]

@MasterOfClucker I don't know what you planned to say but I love your avatar!

I have this "thing" for hummingbirds I guess!

@Bunnyla Did you ever eat an M&M with a slightly odd looking candy shell? Yep, it's like that!

But I do agree with @donrae to check your nests for dampness.

 

[Isaac 0]

@MasterOfClucker I don't know what you planned to say but I love your avatar!

I have this "thing" for hummingbirds I guess!

@Bunnyla Did you ever eat an M&M with a slightly odd looking candy shell? Yep, it's like that!

But I do agree with @donrae to check your nests for dampness.

Sorry i kept changing it.Its back now.Thanks!

 

[aart]

I don't think it's the hens, I think it's the environment. Are the boxes or wherever the eggs are damp at all?

And yep, they should be fine to eat. Even if it were the hens, shell quality issues don't effect egg quality.

Ditto Dat^^^^

Don't think it's the same as the 'white banded eggs' cited.

Open 'em up and see how they look, both contents and interior of shell.

 

[bobbi-j]

I agree with Donrae and Aart. Looks like moisture on the shell to me.