Budgerigar vs Southern Cassowary
Melopsittacus undulatus compared with Casuarius casuarius
Side-by-Side Comparison
| Attribute | Budgerigar | Southern Cassowary |
|---|---|---|
| Scientific Name | Melopsittacus undulatus | Casuarius casuarius |
| Order | Psittaciformes | Casuariiformes |
| Family | Psittaculidae | Casuariidae |
| Conservation Status | Least Concern | Least Concern |
| Length | 18.0 cm (7.1 in) | 155.0 cm (61.0 in) |
| Wingspan | 30.0 cm (11.8 in) | 60.2 cm (23.7 in) |
| Weight | 30.0 g (1.06 oz) | 58000.0 g (2045.89 oz) |
| Diet | Primarily grass seeds and other small seeds. In the wild, feeds on the ground in … | Primarily fallen fruit from the rainforest floor, also fungi, invertebrates, and small vertebrates. A critical … |
| Clutch Size | 4-6 | 3-8 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Budgerigar
Open grasslands, scrublands, and woodland in the Australian interior. Nomadic, following rainfall and seeding events.
Southern Cassowary
Tropical rainforests, mangroves, and adjacent habitat in New Guinea and northeastern Australia.
Song & Call Comparison
Budgerigar
A rising, chattering 'budgerigar' chatter: rapid series of 'chek-chek-chek' and melodic warbling. Enormous wild flocks produce a continuous roaring chorus. Good vocal mimics in captivity.
Southern Cassowary
Produces very deep, booming rumbles and low-frequency calls below 20 Hz (infrasound), felt more than heard. Also gives loud bellowing grunts audible up to 1 km away.
Geographic Range & Migration
Budgerigar
Interior of Australia, especially arid and semi-arid regions. One of the most popular pet birds worldwide.
Southern Cassowary
New Guinea, nearby islands, and northeastern Queensland, Australia.
Conservation Status
Budgerigar
Southern Cassowary
How to Tell Them Apart
Budgerigar
Wild-type is green with yellow head and barred black scalloping on upperparts. Captive-bred varieties include blue, white, yellow, and many other colors.
Short, downward-curved, olive-grey bill typical of parakeets
Southern Cassowary
Glossy black hair-like plumage. Brilliant blue and red bare skin on the head and neck. A large bony casque crowns the head. Vestigial wings with no flight feathers.
Long, laterally compressed, dark grey bill
About These Birds
Budgerigar
The budgerigar is the third most popular pet in the world after dogs and cats, and by far the most common pet parrot. Wild budgies travel in enormous nomadic flocks that can darken the sky. Males can learn to mimic human speech, with one record-holding budgie having a vocabulary of 1,728 words.
Southern Cassowary
The southern cassowary is often called the most dangerous bird in the world due to its powerful legs and dagger-like inner claw that can reach 12 cm in length. Despite this reputation, cassowaries are vital rainforest keystone species, dispersing seeds of plants that no other animal can. The purpose of their distinctive casque remains debated.