The animal kingdom's most popular gay couple no longer exists, now that Silo and Roy, the cohabiting penguins of Central Park Zoo, have called it quits.

The pair rose to recognition six years ago when they "came out" with their same-sex relationship. Since then, they successfully hatched and raised an adoptive chick, after unsuccessfully trying to incubate a rock.

Silo and Roy proved pioneers as six other gay penguin couples have emerged at the zoo since the original couple's revelation.

The affair, however, was soon over when Scrappy, a new female penguin, moved in and caught Silo's attention.

John Rowden, the zoo's head curator, tells the New York Post

Silo eventually moved in with Scrappy, building a new nest with her.

Zookeepers are scratching their heads as to Silo's sudden conversion.