Egg shell color change.

[lagrange chicks]

I have 1 easter egger and 5 bared rocks. Last fall they all stopped laying do to molt and short daylight. Now they all are laying again but 1 bared rock is laying a white egg, I don't see any problems with any chicken and eggs are fine also. Easter egger lays a green egg almost daily, so I know it's not from her. Is this normal? Anything I need to watch for? They get allflock and oyster shells and grit on the side.

 

[nuthatched]

Are you sure it's a barred Plymouth Rock?

 

[lagrange chicks]

Yes. They are 3 years old and always laid a darker egg.