At three weeks the chicks are traveling a long distance with their mother. At times she is the one who is following them as they go in search of good things to eat.
Worms and bugs make up a big portion of a chicken’s diet. They are great to have around to keep the bug population in check. But if you are growing vegetables or flower beds, you need to keep them out, or they will quickly dig up all your vegetables and flowers as they search for worms and bugs.