We have 3 Cinnamon Queen laying hens. They were 4 months old when we got them and they are now roughly 2 years old. All of them are acting perfectly normal, eating and grazing, etc. About 2 months ago we noticed one out of the 3 eggs had very soft shells frequently. So, we increased their calcium with oyster shell calcium mixed into their egg producing grain and omega 3 powder. After a few weeks, one of them stopped laying and instead lays the egg liquid but no shell. I suspect it is the same chicken that was previously laying the very soft shelled eggs. Every morning that I go to gather, there is a liquid egg in the laying box and 2 normal eggs. It's hard to distinguish if there is a yolk and white because it has absorbed into the wood chips. However, there is a yolk color tint. They are all healthy, eating and grazing and no behavioral changes. Any advice on this? Thank you in advance for any answers that you may have.