Central Park Zoo's gay penguins ignite debate

Sometimes you find the best stories in the talkbacks. This one comes from a comment Will made on collision detection

Central Park Zoo's gay penguins ignite debate: Roy and Silo, two chinstrap penguins at the Central Park Zoo in Manhattan, are completely devoted to each other. For nearly six years now, they have been inseparable. They exhibit what in penguin parlance is called 'ecstatic behavior': That is, they entwine their necks, they vocalize to each other, they have sex. Silo and Roy are, to anthropomorphize a bit, gay penguins.