Non-GMO feed and calcium deposits?

[LittleRedShed]

I feed our chickens non-GMO feed. They also free range all day long. In fact, I don't ever lock or unlock the hen house anymore because they have a roost away from predators and are safely kept. They have ample supply of water. Only one of my egg layers - a one year old Araucana is laying a brittle shelled egg with calcium deposits on the top. Does anyone have a natural, and safe effective way to treat her? We like to stick with the organic way of doing things. Thank you!

 

[rc4u]

just nature and it will work out...spring is time for new critters to eat and will change stuff....