So my buff girls are a little over two years old and had been laying quite well. I have gone through a brooding hen, understand that now. Have also gone through a molting time with them, not all the hens, so understand that sorta. Have had weak shells for quite a while now, added extra feeder with oyster shell like recommended. But still having weak shells and egg production is really low, I have 4 hens and only getting 2 good eggs every few days with a weak shell one in the midst. I am noticing a bit of feather loss, how often do they molt, can't see any bugs, checked there tummy's nothing seems abnormal. I am scratching my head they were real productive, are they getting old, I wouldn't think so but.... Anymore ideas would be great and maybe this is just normal these girls are my first hens so not all that experienced so would love input. Love my buff girls, such personality. HELP