Where Do Budgies Live in the Wild? Australia's Nomads

Where in Australia do budgies live?

The budgerigar has one of the largest ranges of any Australian bird, covering most of the mainland. Its core is the arid and semi-arid zone, the vast dry heart of the country that stretches across Western Australia, the Northern Territory, South Australia, western Queensland and western New South Wales.

Budgies are scarce or absent along the humid east coast, in the southeast corner around Melbourne and in the wetter southwest around Perth. They do not live in Tasmania, in rainforest or in dense forest. At times of drought inland they may move closer to the coast or into more wooded country in search of food and water.

What kind of habitat do wild budgies need?

Wild budgerigars need three things: open country with seeding grasses, trees with hollows for nesting, and water within flying distance. Typical habitats include:

• Grasslands and spinifex plains: the main source of the small seeds they eat.
• Mulga and mallee scrub: low, open woodland of acacias and eucalypts that offers shade and shelter.
• River red gums along creeks: old trees along dry watercourses provide hollows for nests and shade on hot days.
• Saltbush plains and farmland edges: where they also feed on seeds of low plants and sometimes on crops.

Water is critical. Dry seeds hold very little moisture, so budgies drink often. Flocks gather at waterholes, creeks, dams and cattle troughs, usually early in the morning and again in the late afternoon. The spread of farm dams and bores for livestock has allowed them to use some areas more often than before.

Nomads that follow the rain

Rain in inland Australia is unpredictable. A region may have no significant rain for years, then a single storm system can turn it green within weeks. Budgerigars cope by being nomads. Flocks wander widely, and when they find an area where rain has made grasses grow and set seed, they settle and breed.

There is some seasonal pattern. In many years budgies drift north in the southern winter and back south in spring and summer, matching the timing of grass seeding in different regions. But the details change from year to year, and a place that is full of budgies one year may have none the next.

This boom-and-bust life explains why numbers vary so much. In dry years flocks are small and scattered. After big rains, budgies breed again and again, and huge flocks, sometimes thousands of birds, can sweep over the plains in green waves.

How wild budgies survive the heat

Summer temperatures in the Australian interior often pass 40 °C (104 °F). Budgerigars avoid the worst of the heat by feeding in the cooler early morning and late afternoon and resting quietly in shade through the middle of the day.

Their small size helps them fly long distances to water, but it also means they lose water quickly. Like other small desert birds, budgies can save water by producing concentrated droppings and by getting some water from the breakdown of the fat and starch in their food. Even so, extreme heatwaves are dangerous: at times, large numbers of budgerigars and other small birds have died from heat stress and dehydration during unusually hot spells.

Where wild budgies nest

Budgerigars nest in holes rather than building open nests. They use hollows in eucalyptus trees, especially river red gums along creeks, and also hollow stumps, fence posts and fallen logs. Several pairs may nest in the same tree, forming loose colonies.

The female lays her eggs on the bare wood or on wood dust inside the hollow. Breeding is triggered by rain and food rather than by a fixed calendar, which is why wild budgies may nest in winter in the north and in spring and summer in the south. The bright green birds with their wavy black markings are well hidden among sunlit leaves, as explained in Why are wild budgies green?

Wild budgies outside Australia

Budgerigars are among the most widely kept pet birds in the world, and escaped birds are seen in many countries. However, they almost never establish lasting wild populations. The best-known exception was in Florida, where budgies released or escaped from aviaries lived along the Gulf coast from the 1950s. The population grew to thousands of birds in the 1970s, then declined, partly due to competition for nest sites with European starlings and house sparrows, and it had disappeared by the 2010s.

For anyone hoping to see wild budgies, the place to go is the Australian outback. Places such as the MacDonnell Ranges near Alice Springs, Sturt National Park in New South Wales and the Pilbara in Western Australia are known for them, especially after rain. Other unique animals of the continent are described in our list of Australian animals.