I'm new to chickens!! We have had our 3 ex-battery hens for about a month. We have never had 3 eggs on the same day and we get small white eggs and large brown eggs, so i'm sure one chicken isn't laying. I'm fairly sure which one isn't laying and shes the one who always jumps on an egg when someone else has laid it! I have also found a mini soft egg filled with just white and was open at the top. Also under the perch one day was what i thought was a piece of paper but it was a papery shell, no white/yolk. What's going on? Will they all lay? I don't know how old they are. They eat well, lots of layer pellets, grit and fruit and veg. Thanks!