The Rush show’s fog, lights and seemingly seizure-inducing lasers are concert essentials. But who can forget the chickens? Maybe 100 chickens spun in huge rotisserie cookers behind vocalist Geddy Lee ’s keyboard. The only explanation was a short video clip that showed guitarist Alex Lifeson playing a policeman who shook a drumstick at a kilt-wearing Lee. The prog-rock group played to a capacity crowd at the Ford ...