According to ancient legend, a mischievous band of Roman soldiers discovered, in the final days of an otherwise pitiful siege in Britain, that their enemy lived in perpetual fear of a half-man, half-bird creature known as the Heron King. Hoisting a Roman solider onto stilts and slapping a heron mask over his face, the Romans sent a tipsy Heron King decoy careening into the middle of a British camp, watching as lines of Celtish soldiers scurried off in terror.