Egg Color Change

[BabyChicksDigScars]

New to the forum. New to raising chickens. Kinda. 8 months now. But, my question is, can very bright light cause a color change in the shell? I was getting blue from EE. I have not witnessed her laying but I have seen her in the nesting box then checked 20 minutes later and there is an extra large white egg (I also have 4 white leghorns) in the nest. I have not seen a blue egg in close to a month. These eggs I believe are hers are larger than the ones I know come from the leghorns. My kids have a tendency to leave the light on in the coop when they are in there so they are sometime in very bright light for a long period. Today I have removed that light to see if any change. Thoughts?

 

[Ol Grey Mare]

Crack one of these eggs and hold a white paper towel against the shell interior. Do this fresh as once dried the interior membrane can dry and cause the shell interior to appear white. The is can help to reveal subtle shades not seen to the naked eye and works as opposed to brown eggs that are shelled white and coated in brown, blue shells are blue throughout.

 

[BabyChicksDigScars]

Ok I’ll give that a try. Is it possible the bright light could cause that? The feed hasn’t changed. They only thing that changed is that light. And temps are so up and down right now

 

[aart]

Do this fresh as once dried the interior membrane can dry and cause the shell interior to appear white.

.....or better yet, peel some of the inner membrane off as soon as you open egg.

Ok I’ll give that a try. Is it possible the bright light could cause that? The feed hasn’t changed. They only thing that changed is that light. And temps are so up and down right now

No.
I'm guessing that egg is from a leghorn and your EE is taking a 'winter break'.

Hopefully that light is not on when it's dark outside?
More bright light during daylight hours will not matter,
but more light after dark can affect them(not shell color tho).