Note that any grass you offer them should still be attached to the roots, don't toss in only the blades, it's difficult to tear away small pieces if the grass isn't attached and which can end up clogging their crop with long pieces.
Adults can manage it a bit better as long as blades aren't too...
C/P from your other post: Because chicks have been known to gorge on grit I offer a tiny pinch on top of their food once every few days. That's plenty to meet their needs. I do not offer free choice grit until they upgrade in grit size (grower grit around 6-8 weeks of age), as by then they...