Sometimes a flock owner would refer to the egg song as the money song. That the hen was singing to tell them another egg was there for the sale. Its interesting how a good analogy, saying often gets reborn, sometimes with out a connection with the old. Maybe there is nothing new under the sun.
Been watching your thread, going good so far. With the closer pictures of your run brought something I have a question about. Does the run have a buried barrier to keep them in and the predators out?