Same-sex penguins become proud parents

Sphen and Magic (far left), two male gentoo penguins at Sea Life Sydney Aquarium, have successfully incubated a baby chick (left). The pair are able to find each other using their calls, and take turns caring for their chick.
Sphen and Magic (above), two male gentoo penguins at Sea Life Sydney Aquarium, have successfully incubated a baby chick. The pair are able to find each other using their calls, and take turns caring for their chick.PHOTOS: AGENCE FRANCE-PRESSE
Sphen and Magic (far left), two male gentoo penguins at Sea Life Sydney Aquarium, have successfully incubated a baby chick (left). The pair are able to find each other using their calls, and take turns caring for their chick.
Sphen and Magic, two male gentoo penguins at Sea Life Sydney Aquarium, have successfully incubated a baby chick (above). The pair are able to find each other using their calls, and take turns caring for their chick.PHOTOS: AGENCE FRANCE-PRESSE

SYDNEY • Two male penguins which paired up as a "same-sex couple" have successfully incubated a baby chick and are "doting" on their tiny offspring, an Australian aquarium announced yesterday.

Gentoo penguins Sphen and Magic are happily "taking turns caring for their baby chick", which was born on Oct 19 and weighs 91g, said Ms Tish Hannan of Sea Life Sydney Aquarium.

Sphen and Magic had caught the attention of aquarium workers when they were constantly seen waddling around and going for swims together.

They then began to build a collective nest of pebbles, prompting the aquarium to provide a dummy egg for them to look after and, when they proved up to the task, a real egg.

The pair have bonded, said Ms Hannan, Sea Life's penguin department supervisor.

"They recognise each other's signature calls and songs. Only bonded penguins will be able to successfully find their partner using their calls when they are separated."

Unlike many mammal species, male and female penguins take on the same parenting roles and share parental duties 50-50.

"There is no real difference when it comes to breeding behaviours between males and females," Ms Hannan explained.

So it "is common to have male-male or female-female courtship and breeding behaviour".

In the wild, however, these courtships are unlikely to result in a chick, so they are normally short-lived, with the penguins becoming unsatisfied and looking for another partner.

"Because we have given Sphen and Magic the opportunity to have a potentially successful breeding season, it is very likely that they will return to each other again next year," said Ms Hannan.

This is not the first time same-sex penguin couples have adopted eggs in captivity.

In 2009, two male penguins - Z and Vielpunkt - successfully hatched and reared a chick that was rejected by its heterosexual parents at a zoo in Berlin.

Before them were Roy and Silo, two male chinstrap penguins at a zoo in New York, which were spotted frequently trying to mate with each other. After they tried to incubate a rock, zookeepers gave them a foster egg that they successfully hatched.

Their foster chick, a female called Tango, eventually paired up with another female.

AGENCE FRANCE-PRESSE

A version of this article appeared in the print edition of The Straits Times on October 27, 2018, with the headline 'Same-sex penguins become proud parents'. Print Edition | Subscribe