Starter feeding problems/question and grit quantity help

[ChickNanny13]

Oyster shell is too soft to act as grit. So, unless they can dig up their own grit, it should be supplied. My soil is pretty gritty, so... most of the year, they do just fine without having any supplemental grit. However, my ground is frozen from November through mid April, so no grit available then. They really enjoy having the occasional bowl full of grit then. Other folks have their birds only on sod, or their soil is very sandy/silty with no grit. In those cases, it's a good idea to supply it.

Thank you, I will continue with grit & OS, better safe than sorry as they eat only when needed. My ground is like clay, their enclosure is on the high ground and with their scratching loosening the "dirt" which I've been using to fill in low spots in my yard. Amusing how GREEN the grass grows over the filled in low spots