I will be very interested in the more experienced folks on this site answering your question. I can tell you that All of my chicks started running around and scratching from the time I brought them home....about 1 week old.
I have only one, a Delaware, at the bottom of the pecking order, who does a head bobbing and bowing, then backing up movements to most of the others and occasionally to me as well. I thought the lowered head and backing up was a sign of submission or protection. My other girls do not display this behavior........only the picked on one.
What does it mean?
Anne