Bull's eye shell design

[ChicMomof10]

All 10 hens are laying, 8-10 a day. Sometimes we get an egg with a strange marking like a bull's eye. What would cause it?

 

[GC-Raptor]

Stress could be from a predator trying to get into coop.
Change in lighting could be opening coop at different times. GC

 

[aart]

Banded eggs are not always caused by two eggs in the shell gland at once.
Sometimes it's just a funky shell gland.

 

[ChicMomof10]

View attachment 2411621
Stress could be from a predator trying to get into coop.
Change in lighting could be opening coop at different times. GC

Thanks. We're going to try a couple of things like opening the coop earlier. Also, she may be the lowest in the pecking order and need extra help getting treats to relieve her stress.

 

[ChicMomof10]

Banded eggs are not always caused by two eggs in the shell gland at once.
Sometimes it's just a funky shell gland.

 

[ChicMomof10]

Thanks for your input. We're new at this but love it!