Here's a sudden question for you: "What is the most commonly bred penguin species in Japan?" The correct answer is "Humboldt penguin!" Humboldt penguins are birds that are bred in various locations across Japan, so many people have probably seen them at least once. As a result, Japan is sometimes referred to as a "Humboldt penguin superpower."

However, on the other hand, the global population of Humboldt penguins is decreasing year by year. Why has their number declined? Why not take a closer look at the hidden secrets of Humboldt penguins right away?