When do my girls going to lay an egg? (Picture attached)

[BigBlueHen53]

Thank! And I feed them with normal adult chicken feed (18% protein) and I usually let them out in the morning and evening for like 30min. I didn't use any grit product because it's kinda hard to find it here in my country

Okay, but do they have access to coarse dirt or sand? Since chickens have no teeth they must have this so their gizzards can grind up their food. What about the oyster shell, can you get that?

 

[Catbutts]

Okay, but do they have access to coarse dirt or sand? Since chickens have no teeth they must have this so their gizzards can grind up their food. What about the oyster shell, can you get that?

Yes they do. And oyster shell is not that hard to find. Maybe I should get some for them too. But can I use an eggshell instead? Thank you!