one of my RIR hens lays an average size egg everyday.the shell is very thin and has something like blood streaks all over the outside of the shell.the other six hens lay nice large eggs with no strange looking shells,they all are on the same diet with oyster shell included,I have tried several things to remove the streaks but nothing works,proxide will remove blood from anything but not from the shell,I am wondering if it is really blood streaks or what.has anyone else had this problem ?
