One of America's A-list gay couples has broken up. No, it's not Rosie and Kelli. It's Roy and Silo. Roy and Silo are male penguins. Chinstrap penguins to be exact. About six years ago, Roy and Silo set up housekeeping together in New York's Central Park Zoo. They courted and attempted to mate and by all accounts were fairly inseparable. They even adopted a child together. Roy and Silo hatched little Tango a couple of years ago and raised her as their own. However, recently Silo has become perhaps the world's first documented ex-gay penguin. He has moved out of...