Consumers to Food Animal Industry: Natural and Free Range mean what?

What does "free range" or "natural" mean in animal agriculture. In Australia there is a call formally put in place definition that will help consumers understand the differences and reduce marketing confusion.
The beef industry could face a crackdown from the consumer watchdog for using the word ''natural'' to describe its products in the wake of legal action against the chicken meat industry for using the term ''free to roam''.
Companies like McDonalds look to food animal industries and trade groups to clarity their product marketing so as to avoid consumer back lash.