It's perhaps one of the most recognizable murals in downtown Cincinnati. Sitting at 15 E. Eighth St., “Martha, the Last Passenger Pigeon,” wings outstretched, leads her sprawling flock over the historic Bird Run at the Cincinnati Zoo – a place Martha, believed to be the last living individual of her species, called home.
But even more recognizable was its designer, internationally celebrated wildlife painter and Cincinnati legend John Ruthven – often referred to as the “20th-century…