Baby Bird Fell Out of Its Nest? What to Do (and What Not to Do)

Somewhere in the moonlit grasslands of Australia, a small, round animal is quietly making history. It is not hunting or fighting or singing. It is pooping — and what it leaves behind is the only cube-shaped poop in the entire animal kingdom. Yes, really. Wombats poop cubes: neat, dry, dice-like cubes, stacked in little piles like a tiny construction project. And the science behind it is even stranger than the poop itself.

For years, people thought the story was a joke. It is not. Scientists were so fascinated that they spent years studying wombat intestines, and their work eventually won an Ig Nobel Prize — the award for research that first makes people laugh, then makes them think. So let us laugh a little, and then think, because the wombat's cube is a small masterpiece of evolution.

Meet the Wombat: Australia's Round Little Bulldozer

Before we get to the cubes, let us meet the cube-maker. The common wombat (Vombatus ursinus) is a stocky, barrel-bodied marsupial found in southeastern Australia and Tasmania. It stands only about 30 centimeters tall at the shoulder, but it can weigh as much as 35 kilograms. It is built for digging: short, powerful legs, strong claws, and a tough, cartilage-plated rear end that can block its burrow like a cork in a bottle.

Wombats are mostly nocturnal. They spend their nights grazing on grasses, roots, and bark, and their days sleeping in long underground burrow systems. They are strong, stubborn, and surprisingly long-lived, with some reaching 20 years or more in the wild.

There are three living wombat species: the common wombat, the southern hairy-nosed wombat, and the critically endangered northern hairy-nosed wombat, of which only a few hundred remain. All three share the famous cube habit, and all three raise their babies in a pouch — except the wombat's pouch faces backwards, so digging does not shower the joey with dirt.

So Why Cubes? The Short Answer Is Territory

Wombats do not just drop their cubes anywhere. They place them deliberately, in piles on top of rocks, fallen logs, and other raised spots around their territory. A wombat can produce 80 to 100 cubes in a single night, stacking them like a tiny cairn — a scented signpost that says: this patch of grassland is mine.

Here is where the cube shape becomes genius. A round dropping would roll off a rock or a log and tumble away downhill. A cube stays put: it sits flat, stacks neatly, and keeps its scent exactly where the wombat chose. For an animal that communicates by smell, a poop that does not roll away is a serious advantage. Evolution, it turns out, is a practical engineer.

The cubes also dry out quickly and keep their shape, so the scent message lasts for days, telling neighbors where the boundaries are without a single confrontation. It is the animal kingdom's version of leaving a note on the door — if the note were made of poop and shaped like dice.

The Long Journey: How a Wombat's Gut Makes a Cube

The real mystery is not why cubes are useful. It is how a soft, squishy intestine produces something with flat sides and sharp corners.

A wombat's digestion is one of the slowest in the mammal world. Food can take up to 14 to 18 days to travel through a wombat's gut, and its intestine is remarkably long — around 10 meters in an animal barely a meter long. The longer food stays inside, the more water the body absorbs from it, so by the time waste reaches the end of the line, it is extremely dry. Dry waste holds a shape. Wet waste does not.

But dryness alone does not make cubes. The shaping happens in the final stretch of the intestine. Researchers at the University of Tasmania and Georgia Tech discovered that the wombat's intestinal wall has sections of different stiffness: some parts are stretchy, others stiffer and less flexible. As dry waste is pushed along, these uneven walls squeeze it with different amounts of pressure, gradually pressing it into flat faces and corners — the way a baker shapes dough by pressing it unevenly in a mold.

The wombat does not have a cube-shaped intestine. Its intestine's rhythm — alternating tight and loose squeezes as waste moves through the last section — sculpts the waste into cubes.

The Ig Nobel Prize and the Scientists Who Studied Wombat Poop

When the research team published its findings, the world paid attention in the best possible way. In 2019, the study won the Ig Nobel Prize in Physics, an award that celebrates research that makes people laugh first and think second. The team had solved a puzzle that had baffled naturalists for decades, with careful dissection, modeling, and physics.

Their work went beyond a funny headline. By studying how a soft tube can shape a cube, the researchers opened up new questions about how intestines work in all animals — including humans. Sometimes the silliest-sounding science leads to the most serious insights, much like the shoebill stork, a bird that looks like it walked out of the age of dinosaurs yet teaches us real lessons about wetland conservation.

5 Amazing Wombat Facts You Did Not Know

• Wombats have backwards pouches. Unlike kangaroos, whose pouches open upward, a wombat mother's pouch opens toward her rear, so soil does not fly in while she digs. A joey rides facing backwards for months — the world's tiniest backseat driver.
• Their rear ends are armor. A wombat's rump is covered in thick, tough cartilage. When a predator chases it into a burrow, the wombat plugs the tunnel with its rear. It is one of the toughest behinds in nature.
• Their teeth never stop growing. Like rodents, wombats have continuously growing teeth, worn down by a lifetime of chewing tough grasses and bark.
• They are champion diggers. A wombat burrow system can have multiple entrances, sleeping chambers, and side tunnels stretching for 20 meters or more.
• Baby wombats are called joeys. A joey stays in its mother's pouch for about six months, then follows her around for up to a year before striking out on its own. And yes, even joeys eventually learn the family trade.

Why Do People Love Wombats So Much?

Part of the wombat's charm is that it looks like a stuffed animal that came to life: round body, stubby legs, calm waddling walk — and cube poop that makes it unforgettable. But there is a deeper reason people adore wombats. They are gentle, quiet animals that mind their own business, dig their burrows, raise their babies, and leave tidy little cube piles as calling cards. They do not roar, chase, or show off. They just exist, roundly and stubbornly, in their corner of the world.

That quiet charm is also why wombats need protection. Habitat loss, road accidents, and disease — especially sarcoptic mange — threaten wild populations, and the northern hairy-nosed wombat, found only in a few protected areas of Queensland, is one of the rarest mammals on Earth. Learning about them is the first step toward caring about them. If you love animals that seem to break the rules of nature, you will enjoy our funny and heartwarming animal videos — and you can learn more about what we do on our About page.

Questions People Ask About Wombat Poop

Are wombat cubes really perfect cubes?

Not perfect like dice from a board game — natural cubes have slightly rounded edges and vary a little in size, usually around 2 centimeters across. But they are unmistakably cube-like, with flat faces that let them stack.

Do wombats really stack their poop?

Yes. Wombats deliberately place their cubes on raised surfaces like rocks and logs, building small piles that mark territory and communicate with other wombats through scent.

Why is wombat poop so dry?

Because wombat digestion is extraordinarily slow. Food spends up to two weeks or more in the gut, giving the body time to absorb almost all the water from it. The result is dry, firm waste that can be molded into cubes — and that keeps its shape and scent for days.

Animals are full of body mysteries that sound like jokes until science explains them — like the strange question of why cats purr, which scientists are still unraveling. The wombat's cube is one of the best examples: a punchline that turned out to be a lesson in anatomy, physics, and evolution.

So the next time someone tells you that nature is boring, tell them about the wombat: the round little bulldozer of the Australian bush that digs burrows, raises its joey in a backwards pouch, blocks its front door with its armored rear end — and leaves behind the only cube-shaped poop on the planet. Nature is not boring. Nature is hilarious, ingenious, and just a little bit gross — and the wombat proves all three at once.