Roy & Silo (The true story of the penguin couple in New York City’s Central Park Zoo)

Roy and Silo (born 1987) were two male chinstrap penguins in New York City’s Central Park Zoo. They were noted by staff at the zoo in 1998 to be performing mating rituals, and one of them in 1999 attempted to hatch a rock as if it were an egg. This inspired zoo keepers to give them an egg from a pair of penguins, which could not hatch it, resulting in both of them raising a chick that was named Tango.

Roy and Silo were not the first same-sex male penguin couple to be known in New York, as a pairing of two penguins named Wendell and Cass at New York Aquarium was reported in 2002. However, attention was first brought to Roy and Silo after The New York Times published a story about them in May 2004.