Hi there, total noob here. I have 2 chicks that are 3 weeks old, and they are so restless and keep flying and jumping up on the top edge of the brooder box when the lid is off. I couldn't find another thread to answer my question, so here goes. I want to let them out to scratch in the dirt for a short time during the day. Can they go out at this stage? They have been on straight starter food, without any grit. Won't they pick up dirt and small rocks on their own? Is there anything I need to be worried about? Thanks for your help.