Feather DNA testing revealed that the 10-year-old penguin was male after zookeepers observed unexpected mating habits with another penguin named Frank

The mystery of Maggie’s eggless encounters was finally solved when keepers conducted a DNA test on the bird’s feathers in October. It turns out Maggie is a male. “I wasn’t 100% surprised when I found out,” Keen said. In honor of the bird’s far-Northern roots, “We’ve renamed him with the fine Scandinavian name of Magnus,” Keen said.

A British zoo said it is down to only one female king penguin after a 10-year-old bird who has been living at the facility since 2016 was found to be male.

A female king penguin in Britain’s only breeding colony for the species is actually a male, keepers have discovered after eight years.