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Budgerigar
Meet the species

Budgerigar

Melopsittacus undulatus

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The budgerigar (Melopsittacus undulatus) is a small parrot native to the arid interior of Australia and, since the mid-1800s, one of the most thoroughly domesticated parrot species in the world. Adults measure roughly 18-20 cm, weigh 22-32 g, and typically live 8-15 years with good care. What sets it apart most is its exceptional word-mimicking ability - the Guinness World Record-holding male budgerigar knew an estimated 1,728 words.

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Grooming needs

2/5 demand scale

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Activity needs

4/5 demand scale

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Care in practice

Mostly pellets and veg, minimal seed, regular avian-vet checkups

Quick species summary

Suitable for
For owners who can give daily interaction and flight
Care difficulty
medium
Noise level
moderate
Need for company
high
Need for flight
high
Same-species company
recommended
Other species
Conditional
Beginner
Conditional
Type
small parrot
Origin
Australia
Living environment
Spacious cage plus several hours of daily free flight
Activity
4 / 5
Lifespan
8 – 15 years
Size
Small
Weight
20 – 30 g
Length
18 – 20 cm

About the species

The budgerigar is the world's most widely kept pet bird, but its reputation as a 'simple starter bird' is often misleading. It's one of the few parrot species that has been genuinely domesticated - it reached Europe in 1840, and breeders in Belgium and England had already recorded the first color mutations (yellow, then blue) between 1870 and 1885. That long breeding history produced dozens of color varieties, from the green and yellow of wild birds to blue, white, and violet. Whatever the color, though, it's the same bird with the same demanding needs as any other parrot.

Wild origins and flocks

In the wild, budgerigars inhabit the arid and semi-arid interior of Australia and live in huge, nomadic flocks that follow rainfall and seeding grasses across the landscape. That sociability is key to understanding their needs in captivity: a budgie isn't a bird that's satisfied with a cage and occasional attention. It needs regular, daily social contact - either from another budgie or from an owner who makes time for it every day.

Keeping more than one

If you want to keep several budgies, the RSPCA notes they can be safely housed in groups, since they're a colony-nesting species, much like cockatiels and lovebirds. It's advisable to separate males and females you don't intend to breed. A bird kept alone can bond strongly with its owner, but only if that owner provides daily attention - otherwise it can become lonely and develop problem behaviors.

Space and cage size

Space requirements are often underestimated. The RSPCA recommends that a cage where a bird spends most of its time be at least twice its wingspan in every dimension, with roughly a 5% size increase for each additional bird beyond two in species under 50g - which includes budgerigars. Birds should also get at least a few hours a day outside the cage to fly freely; flight isn't a luxury for this species, it's a basic physical and psychological need.

Diet

An all-seed diet is one of the most common mistakes owners make. The RSPCA recommends seeds make up no more than a tenth of the daily diet, with the rest coming from good-quality pellets plus fresh vegetables and fruit (carrots, broccoli, and de-seeded apple, for instance); avocado is toxic to parrots and should be avoided entirely. Young, recently weaned birds need closer monitoring until they're reliably feeding themselves and have reached a stable weight.

Noise level

Noise is one of the few areas where the budgerigar genuinely earns its 'easier' reputation: compared with larger parrots such as macaws or cockatoos, it's fairly quiet, with a vocal range that runs from soft warbling to sharper chatter and, occasionally, a brief, comparatively quiet screech. That makes it a realistic option for apartments - but don't expect silence, since a budgie will chatter almost continuously through the day.

Talking ability

Budgerigars, especially males, are among the parrots with the most impressive word-mimicking ability relative to their small size. The best-known example is a male named Puck, who according to Guinness World Records knew an estimated 1,728 words before his death in 1994 - officially the largest vocabulary ever recorded for a bird. Not every bird will learn to talk, of course; it depends on the individual, its sex, and the time invested.

Health risks

On the health side, a few risks are particularly common in this species. According to VCA Animal Hospitals, budgerigars frequently develop tumors of the kidney and reproductive organs, which can press on the sciatic nerve and cause one-sided lameness. A poorly balanced, all-seed diet low in iodine can cause thyroid enlargement (goiter), showing up as wheezy breathing, a hoarse voice, and excess weight. Scaly face and leg mites are also common, as is fatty liver disease from high-fat diets. Regular checkups with an avian vet and a balanced diet substantially reduce most of these risks.

Who it suits

A budgerigar is a good choice for someone who wants an interactive, comparatively quiet, space-efficient bird and is willing to set aside time every day for socializing and flight, plus commit to 8 to 15 years of care. It's not a good fit for households wanting a 'bird to just look at,' homes with free-roaming cats or dogs that can't be fully separated from the bird, or owners expecting complete silence.

Temperament

social, curious, chatty, energetic, flock-oriented

Suitable for

For owners who can give daily interaction and flight

Living environment

Spacious cage plus several hours of daily free flight

Grooming

Mostly pellets and veg, minimal seed, regular avian-vet checkups

Pros & cons

Advantages of the species

quieter than most larger parrots, well suited to smaller living spaces, capable of learning to mimic words and sounds

Things to consider

needs daily interaction and flight space, not just a cage, prone to tumors and goiter on an unbalanced diet, unsafe around free-roaming cats or dogs

Notes

A male budgerigar named Puck knew an estimated 1,728 words before his death in 1994, according to Guinness World Records - the largest vocabulary ever documented for a bird.

Frequently asked questions

Can a budgerigar live alone, or does it need another bird for company?

A budgerigar can live alone if its owner genuinely commits to daily attention - talking to it, playing, and letting it out of the cage. If you can't guarantee that, a pair is the better option, since this is a strongly social, colony-nesting species that lives in large flocks in the wild. A lone bird without enough attention can become lonely and develop problem behaviors such as excessive feather plucking.

How big a cage does a budgerigar actually need?

The RSPCA recommends that a cage where a bird spends most of its time be at least twice its wingspan in every dimension, increasing the size by roughly 5% for each additional bird beyond two in lighter species like the budgerigar. On top of that, the bird needs at least a few hours a day outside the cage for free flight - that's not a bonus, it's a basic requirement.

Is an all-seed diet enough for a budgerigar?

No. The RSPCA recommends that seeds make up no more than a tenth of the daily diet, with the rest coming from good-quality pellets and fresh vegetables and fruit. An all-seed diet leads to obesity, fatty liver disease, and iodine deficiency, which can cause the thyroid to enlarge. Avocado is toxic to budgerigars and should be avoided entirely.

Are budgerigars loud? Will they bother apartment neighbors?

Compared with larger parrots like macaws or cockatoos, budgerigars are fairly quiet - their vocal range runs from soft warbling to sharper chatter and, occasionally, a brief screech that's also comparatively subdued. That makes them one of the more apartment-friendly parrot species. They're not silent in any absolute sense, though - expect near-constant chatter throughout the day.

Can budgerigars actually learn to talk?

Yes, and surprisingly well for such a small bird - especially males. According to Guinness World Records, a male named Puck knew an estimated 1,728 words before his death in 1994, officially the largest vocabulary ever recorded for a bird. Not every budgie will talk, though - it depends on the individual, its sex, and the time you put into training.

Is a budgerigar safe in a household with a cat or dog?

Only with strict supervision and complete physical separation. A budgerigar is a prey animal, so even a seemingly minor bite or scratch from a cat or dog can cause a severe, even fatal infection. If you have a cat or dog at home, make sure the bird is never accessible to them unsupervised, even if they seem to get along.

Related species

This species profile is editorially prepared on Živalce.si.

Sources and further reading