I've got oyster shell in a bowl for the girls. I also have them on layer feed for now.
Soon, I'll be introducing some younger girls and I'll switch back to grower. It doesn't seem like anyone ever eats any of the oyster shells. They are out in a regular dog bowl. Is that OK?
Are they just not taking it because they don't crave the calcium since it's in the food?
How do chickens know that oyster shells have the calcium they need? I mean, 300 years ago before we intervened, did chickens have ready access to oyster shells? What gives?