One of my hens is laying and we have 3 young pullets. I'm feeding all them grower feed and put out crushed oyster shell for the hen as she pleases. If I understand correctly, the pullets will not eat the oysters shells, even if it's available to them, right? I heard extra calcium in young pullets could be damaging to their health so I'm just making sure I'm a newbie here so sorry if it's an obvious question... Thanks!