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20 Fun Facts About Penguins

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To celebrate World Penguin Day (which is today, April 25), here are a few fun facts about these adorable tuxedoed birds.

1. All 17 species of penguins are found exclusively in the Southern Hemisphere.

2. Emperor Penguins are the tallest species, standing nearly 4 feet tall. The smallest is the Little Blue Penguin, which is only about 16 inches.

emperor penguin
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3. The fastest species is the Gentoo Penguin, which can reach swimming speeds up to 22 mph.

Gentoo Penguin
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4. A penguin's striking coloring is a matter of camouflage; from above, its black back blends into the murky depths of the ocean. From below, its white belly is hidden against the bright surface.

penguins swimming in the ocean
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5. Fossils place the earliest penguin relative at some 60 million years ago, meaning an ancestor of the birds we see today survived the mass extinction of the dinosaurs.

emperor penguins
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6. Penguins ingest a lot of seawater while hunting for fish, but a special gland behind their eyes—the supraorbital gland—filters out the saltwater from their blood stream. Penguins excrete it through their beaks, or by sneezing.

penguins swimming in the ocean
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7. Unlike most birds—which lose and replace a few feathers at a time—penguins molt all at once, spending two or three weeks land-bound as they undergo what is called the catastrophic molt.

molting penguin
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8. All but two species of penguins breed in large colonies of up to a thousand birds.

king penguins
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9. It varies by species, but many penguins will mate with the same member of the opposite sex season after season.

chinstrap penguins
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10. Similarly, most species are also loyal to their exact nesting site, often returning to the same rookery in which they were born.

maegellic penguin nesting
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11. Some species create nests for their eggs out of pebbles and loose feathers. Emperor Penguins are an exception: They incubate a single egg each breeding season on the top of their feet. Under a loose fold of skin is a featherless area with a concentration of blood vessels that keeps the egg warm.

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12. In some species, it is the male penguin which incubates the eggs while females leave to hunt for weeks at a time. Because of this, pudgy males—with enough fat storage to survive weeks without eating—are most desirable.

emperor penguins
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13. Penguin parents—both male and female—care for their young for several months until the chicks are strong enough to hunt for food on their own.

Penguins nest
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14. If a female Emperor Penguin's baby dies, she will often "kidnap" an unrelated chick.

penguin chicks
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15. Despite their lack of visible ears, penguins have excellent hearing and rely on distinct calls to identify their mates when returning to the crowded breeding grounds.

16. The first published account of penguins comes from Antonio Pigafetta, who was aboard Ferdinand Magellan's first circumnavigation of the globe in 1520. They spotted the animals near what was probably Punta Tombo in Argentina. (He called them "strange geese.")

17. An earlier, anonymous diary entry from Vasco da Gama's 1497 voyage around the Cape of Good Hope makes mention of flightless birds as large as ducks.

18. Because they aren't used to danger from animals on solid ground, wild penguins exhibit no particular fear of human tourists.

19. Unlike most sea mammals—which rely on blubber to stay warm—penguins survive because their feathers trap a layer of warm air next to the skin that serves as insulation, especially when they start generating muscular heat by swimming around.

20. In the 16th century, the word penguin actually referred to great auks (scientific name: Pinguinus impennis), a now-extinct species that inhabited the seas around eastern Canada. When explorers traveled to the Southern Hemisphere, they saw black and white birds that resembled auks, and called them penguins.

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The Mules That Help Fight California's Wildfires
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Forget dalmatians—in remote parts of Northern California, mules are the fire department's four-legged helpers of choice.

When a blaze roars to life in a residential area, firefighters can use trucks to transport the tools needed to battle it. But in the California wilderness, where vehicles—and sometimes thanks to environmental restrictions, helicopters—can’t venture, mules bear the burden. According to Business Insider, the donkey-horse hybrids can carry 120 pounds of supplies apiece while walking 4 mph up rugged terrain. Llamas are also capable of making the trek, but mules are preferred for their resilience and intelligence.

You can see them at work in the video below.

These animals do extraordinary work for the country, but they’re not the only mules assisting the U.S. government. The Havasupai village of Supai is located at the bottom of the Grand Canyon, and the mail is delivered there each day by parcel-toting mules.

[h/t Business Insider]

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