3 month old Pullet eating oyster shell?

[jesirose]

I thought chickens wouldn't eat the oyster shell unless they needed more calcium? Isn't it too early for her to be taking extra calcium?

We have a big feeder with a feed labeled "starter-grower-layer" and a separate container of oyster shell.

 

[Den in Penn]

She may have just been checking it our. Most of the time they never touch the oyster shell if they don't need it. Every once and a while one does. Do they have a source of rock grit? At three months it is early for her to need and be able to prossecess the extra calcium. Pulling her out and giving her a lower calcium enviorment is one option. But making sure she has a good grit availble would be my first effort at fixing it.