Happy Feet took its cues on penguin behavior, pre-Mumbles, from March Of The Penguins -- both the French and the English editions. But anyone who's seen March of the Penguins knows that there are good reasons for the old traditions. Don't worry, this isn't a Shaggy Dog Story (of either kind). Mumbles's actions help the food supply, not just of emperor penguins, but of every non-human species that eats fish or the ingredients of "fun food." The whole ecosystem had suffered; the whole ecosystem will be repaired in part. It's just that the Law of Unintended Consequences is inescapable.