While we still do not have a definitive answer about the reason(s) for which birds stand on one leg, a list of suggestions has been offered both by expert ornithologists and amateur birdwatchers. We offer a perspective grounded in statics and rotational dynamics that has not been suggested in the literature. The discussion has implications for bird study, and it can also be used as a rich context for teaching statics and dynamics topics at levels ranging from conceptual courses to advanced mechanics. (Contains 6 figures.)