My Northern female redfoot,Knobs,laid a clutch of 7 (her usual) right on schedule. Two were malformed. Although they look thin shelled,they aren't. I dissected the worst one and the shell is normal thickness and hardness. The least deformed,I put in the incubator with the rest,just for kicks. Does anyone have any experience with eggs coming out like this? They get plenty of calcium and D3.