We just got new chicks last week, our first ever batch . They are 4 days old now and I came home today to find dh giving them little pieces of shrimp I took them out (but boy did they like fighting over it!) because I was thinking that they are too young. When are they old enough to get treats? When are they old enough to run around in the grass? I'm assuming they would find things to eat in the grass, so would we need to give them grit then? Thanks!