Bilby vs Bandicoot for Kids
A greater bilby is not unrelated to bandicoots; it is a highly specialised member of the same bandicoot order, Peramelemorphia. This page compares the greater bilby, Macrotis lagotis, with the southern brown bandicoot, Isoodon obesulus. The bilby is larger, long-eared, silky blue-grey, black-and-white-tailed, and adapted to dry-country burrows. The southern brown bandicoot is smaller, stockier, coarse-furred, short-eared, and usually hidden in dense southern scrub. Both are nocturnal omnivores with pointed snouts, strong digging claws, backward-opening pouches, very short pregnancies, and important soil-turning jobs.
Greater Bilby
- Type: Long-Eared Desert-Burrowing Bandicoot Relative
- Group: Living species Macrotis lagotis in bilby family Thylacomyidae and bandicoot order Peramelemorphia
- Known for: Enormous hairless pink ears, silky blue-grey fur, pointed snout, long sticky tongue, crested black-and-white tail, strong clawed forefeet, unusual low-nosed running gait, deep spiral burrows, backward-opening pouch, nocturnal desert foraging, and soil engineering
- Diet: Nocturnal omnivore digging for termites, ants, beetles, larvae, spiders, seeds, bulbs, tubers, fruit, fungi, and other small animal or plant foods, obtaining needed moisture from food
- Special skill: Excavating deep, often spiral burrows with multiple bends that buffer desert heat and hide the animal, while giant blood-vessel-rich ears release heat and stay above ground to listen during digging
Southern Brown Bandicoot
- Type: Small Stocky Dense-Scrub Digging Bandicoot
- Group: Living species Isoodon obesulus in bandicoot family Peramelidae and order Peramelemorphia
- Known for: Stocky rounded body, short coarse dark brown-grey or golden-flecked fur, pointed but shorter snout, small rounded ears, short tail, powerful front claws, arched hopping run, cone-shaped feeding holes, grass nest, dense-cover life, backward-opening pouch, and exceptionally rapid breeding
- Diet: Nocturnal omnivore digging for insects, larvae, earthworms, spiders, fungi, roots, tubers, seeds, fruit, and other plant material in soil and leaf litter
- Special skill: Locating underground food by smell, raking soil backward with strong forefeet, and leaving neat conical pits that trap litter, water, and seeds while turning over the forest-floor soil
Quick Answer
Quick answer: The greater bilby is a large, desert-adapted bandicoot relative with enormous pink ears, silky blue-grey fur, a long black-and-white crested tail, and deep spiral burrows. The southern brown bandicoot is smaller and stockier, with coarse dark brown-grey fur, tiny rounded ears, a short tail, dense scrub habitat, and a grass nest. Both dig for food and carry joeys in backward-opening pouches, but the bilby is the much more specialised deep burrower.
Greater Bilby vs Southern Brown Bandicoot: Quick Comparison
| Feature | Greater Bilby | Southern Brown Bandicoot |
|---|---|---|
| Scientific identity | Macrotis lagotis in family Thylacomyidae | Isoodon obesulus in family Peramelidae |
| Relationship | A specialised bilby within bandicoot order Peramelemorphia | A true bandicoot in the same order Peramelemorphia |
| Adult size | About 29-55 cm head-body, 20-29 cm tail, and males up to about 2.4-2.5 kg | About 28-36 cm head-body and commonly roughly 0.4-1.6 kg, varying by sex and population |
| Ears | Enormous, long, mostly hairless, pink, and rich in visible blood vessels | Small, rounded, furred, and angled outward |
| Coat and tail | Soft silky blue-grey coat; long crested tail with black middle and white tip | Short coarse mottled brown-grey coat; relatively short plain tail |
| Main habitat | Arid spinifex, dunes, grasslands, shrublands, plains, and desert soils | Dense heath, scrub, forest understorey, woodland, and regenerating cover |
| Shelter | Deep, long, often spiral burrow that can descend about 2 m | Concealed grass-and-leaf nest or shallow shelter in dense vegetation |
| Foraging signs | Longer scratchings and holes roughly 10-25 cm deep around food | Small conical pits produced by raking soil backward |
| Pouch | Opens backward so digging soil is less likely to enter | Also opens backward, a shared digging adaptation |
| Best identification clue | Rabbit-like ears, silky blue-grey body, and black-and-white crested tail | Tiny rounded ears, coarse brown body, short tail, and cone-shaped soil digs |
How Are Greater Bilby and Southern Brown Bandicoot Alike?
- Both are living Australian marsupials in bandicoot order Peramelemorphia, with pointed snouts, strong forelimbs, enlarged hind limbs, and an arched bounding or hopping gait.
- Both are mainly nocturnal, spend the day hidden, rely heavily on smell and hearing, and dig into soil or leaf litter for invertebrates, fungi, seeds, roots, and other foods.
- Both have backward-opening pouches that help keep loose soil away from nursing young while the mother scratches and digs with her forefeet.
- Both are usually solitary, meet briefly for breeding, have unusually short gestations for mammals, and give birth to tiny joeys that attach to teats inside the pouch.
- Both act as ecosystem engineers: their feeding digs mix soil, collect organic matter, improve water entry, expose nutrients, and create small germination sites for plants.
How Are Greater Bilby and Southern Brown Bandicoot Different?
- The greater bilby reaches a longer body and higher maximum mass than the southern brown bandicoot benchmark.
- A bilby has enormous pink ears and silky blue-grey fur, while the southern brown bandicoot has tiny rounded ears and short coarse mottled brown fur.
- The bilby’s tail is long, crested, black through the middle, and white-tipped, while the southern brown bandicoot’s tail is shorter, plainer, and less conspicuous.
- Greater bilbies live in dry spinifex, dunes, plains, and Acacia country, while southern brown bandicoots depend mainly on dense heath, scrub, woodland understorey, and regenerating cover.
- Bilbies excavate deep spiral daytime burrows, while southern brown bandicoots usually sleep in concealed grass-and-leaf nests and make much shallower conical feeding pits.
Greater Bilby vs Southern Brown Bandicoot Showdown
Adaptation showdown: Greater Bilby wins size because males can reach about 2.4 to 2.5 kilograms and 55 centimetres in head-body length, above the southern brown bandicoot’s usual range. Speed is a Tie because their bounding escape gaits lack a fair matched test. Greater Bilby wins strength specifically for excavation: long claws and powerful forelimbs build deep spiral burrows rather than shallow food pits. Stealth is a Tie because both hide by day and forage quietly at night in different habitats. Social behaviour is a Tie because both are primarily solitary. Swimming is a Tie because neither is a specialised swimmer or has matched performance evidence. Greater Bilby wins weirdest for combining ears nearly two-thirds of body length, heat-shedding ear vessels, deep spiral burrows, a soil-proof backward pouch, and an ability to meet water needs through food.
Fun Greater Bilby vs Southern Brown Bandicoot Facts
A Bilby Is a Bandicoot Relative
Bilbies and true bandicoots share order Peramelemorphia, but modern bilbies belong to family Thylacomyidae while the southern brown bandicoot belongs to Peramelidae. Their common ancestor explains the pointed snout, digging forefeet, short pregnancy, and backward pouch.
Bilby Ears Work Like Cooling Panels
The greater bilby’s almost hairless ears contain many blood vessels. Warm blood flowing near the surface can lose heat to the night air, while the tall ears also collect faint sounds and remain above the soil when the nose and claws are busy digging.
The Pouch Opens Away From Flying Dirt
Unlike the forward-opening pouch of a kangaroo, both compared animals have a pouch entrance facing backward. When a mother claws soil toward her hind end, the opening’s direction reduces the amount of loose dirt that can reach attached joeys.
Tiny Pits Can Repair Soil
A southern brown bandicoot rakes backward and leaves a cone-shaped food pit. Bilbies make larger digs and burrows. Both disturbances catch leaves, water, seeds, and nutrients, break hard surface crusts, and create fertile pockets across the landscape.
Their Pregnancies Are Extremely Short
Bandicoot relatives have some of the shortest mammal pregnancies. A greater bilby gives birth after roughly 12 to 14 days, while southern brown bandicoot gestation is also around two weeks. Most growth then occurs safely attached to a teat in the pouch.
Greater Bilby vs Southern Brown Bandicoot Quiz
- Is a greater bilby related to bandicoots? Answer: Yes. Both belong to order Peramelemorphia.
- Which animal has enormous pink ears and a black-and-white tail? Answer: The greater bilby.
- Where does a southern brown bandicoot usually sleep? Answer: In a concealed grass-and-leaf nest within dense cover.
- Why do both pouches open backward? Answer: The direction helps keep digging soil away from the pouch opening.
- How can their feeding pits help plants? Answer: The pits trap water, leaf litter, seeds, and nutrients and loosen the soil.
Greater Bilby vs Southern Brown Bandicoot FAQ
Is a bilby a type of bandicoot?
A bilby is a specialised close relative in the bandicoot order Peramelemorphia, but it belongs to its own living family, Thylacomyidae.
Which is bigger, a bilby or southern brown bandicoot?
The greater bilby reaches the larger maximum body length and mass.
Why does a bilby have such large ears?
The ears improve hearing and contain surface blood vessels that help release body heat.
Do bilbies and bandicoots live in burrows?
Greater bilbies dig deep spiral shelter burrows; southern brown bandicoots more often sleep in grass-and-leaf nests in dense cover.
What do both animals eat?
Both are omnivores that dig for insects, larvae, fungi, roots, seeds, and other plant or animal foods.
Animal Words to Know
- Peramelemorphia: The marsupial order containing bandicoots and bilbies.
- Ecosystem engineer: An animal that changes habitat in ways that affect many other organisms.
- Omnivore: An animal that eats both plant and animal foods.
- Burrow: A tunnel or chamber dug into soil for shelter, nesting, or escape.
- Vibrissae: Sensitive whiskers that detect touch and nearby objects.
Design an Australian Digger Field Card
Design an Australian Digger Field Card
Draw a greater bilby and southern brown bandicoot at honest shared scale. Make the bilby larger in red desert soil, with enormous pink ears, silky blue-grey fur, long pointed snout, strong claws, and a long crested tail with black middle and white tip. Make the bandicoot smaller in dense heath, with stocky body, coarse mottled dark brown-grey fur, tiny rounded ears, shorter snout, short plain tail, and a cone-shaped feeding pit. Add cutaway-safe shelter diagrams for a deep spiral bilby burrow and grass bandicoot nest, backward pouch arrows, soil-engineering pits, and labels for larger, smaller, giant ears, tiny ears, long tail, short tail, desert, dense scrub, burrow, nest, and backward pouch.
Meet Each Animal
Want the full fact file? Here are quick highlights from each animal’s own facts page.
Greater Bilby Fact Highlight
From the full animal facts pageSouthern Brown Bandicoot Fact Highlight
From the full animal facts pageMore Animal Comparisons
Pick another animal matchup and keep exploring. Tiny facts, big questions, very serious animal business.
Make an Animal Story
Turn a giant-eared desert burrower, a tiny scrubland soil digger, and two pouch joeys into an adventure with our free Animal Story Generator.