One of them almost drowned trying to learn how to drink. These chickens didn't know what freedom was. I don't know if they would have ever enjoyed their freedom without someone to teach them what to do. They found out that they could go anyplace in the barnyard. But it took them a while.
Humans are the same way.
We are creatures of habit. We don't realize it, but we do things out of habit. Sometimes God is wanting to break old habits and old things in our life. Many Christians bring them over into the Christian walk. God begins to show us a better way as our old habits are not fitting for God's kingdom or His house.