Oyster-grit - how much?

[Cakehead]

First time chicken keeper here. Chooks arrived on Friday and are in an Eglu on our lawn. We'll let them out a bit once they've got used to us, so they will have a bit of free-ranging. How much Oyster-grit should I be adding to their food? Don't want to overload them but don't want them going short either... Thanks!

If you're feeding them layers pellets, as supplied by Omlet, then technically, they don't really need extra grit (apparently).

If they will eventually free-range, they'll pick up extra grit (but not neccesarily calcium based) when they're scarifying your lawn raking about.

I use organic pellets and my three free-range but just for peace of mind, I scatter a few handfuls of grit inside their run every two or three weeks, so when they're scratting about in there before I let them out, they get the grit.

I use a mix of grit (for digestion essential) and oyster shells for calcium (desirable for good egg production after 1 yr old iirc )

I give them egg shells.
Bake them in the oven and crumble them up really fine

Hi, our hens free range every day, but still help themselves to some oyster grit every now and then. We just put some in a small dish attached to the side of the food run, next to their feeders. Seems to work well.