one of my hens is laying

[Queen Scoot]

out of the six girls that i have. my question is do i need to add oyster shells to their diet now? if so how do i go about doung this? do i mix it in with their feed? or feed it free choice?
thanks

 

[s6bee]

I give mine free choice oyster shell in a dish on the wall of the coop. In reality, a good layer crumble will have enough calcium but I'd rather ofter it to them. It's not expensive and lasts a while.