Newly laying pullets often lay thin shelled or shell-less eggs. If they are not provided an adequate source of calcium to form the egg shell, their body will steal it from their bones.If not disease of "Egg Drop Syndrome", I will be relieve. I will try my best to find good source of Calcium. As for Oyster is really hard here at my place, nearly none, but I heard " Squid Bone" can use as source of Calcium too?
Squid bone should work. What form is it in? It should be crushed similarly to the way oyster shell is provided for poultry use for it to be easy for the chickens to consume.