Couples in many penguin species, including Adelie, Chinstrap, Gentoo, Macaroni, Magellanic, and Royal penguins stay together and mate throughout their lifetime.

The penguin was about a year old, 50 centimeters (20 inches) long and weighed about 2.7 kilograms (6 pounds) when it arrived, Argilla said. Royal penguins can grow to about 75 centimeters (30 ...