House Sparrow vs Southern Cassowary
Passer domesticus compared with Casuarius casuarius
Side-by-Side Comparison
| Attribute | House Sparrow | Southern Cassowary |
|---|---|---|
| Scientific Name | Passer domesticus | Casuarius casuarius |
| Order | Passeriformes | Casuariiformes |
| Family | Passeridae | Casuariidae |
| Conservation Status | Least Concern | Least Concern |
| Length | 16.0 cm (6.3 in) | 155.0 cm (61.0 in) |
| Wingspan | 25.0 cm (9.8 in) | 60.2 cm (23.7 in) |
| Weight | 30.0 g (1.06 oz) | 58000.0 g (2045.89 oz) |
| Diet | Primarily seeds and grains, supplemented with insects during breeding season. Readily exploits human food scraps … | Primarily fallen fruit from the rainforest floor, also fungi, invertebrates, and small vertebrates. A critical … |
| Clutch Size | 1-8 | 3-8 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
House Sparrow
Closely associated with human habitation. Found in cities, towns, farms, and any built environment. Rarely found far from people.
Southern Cassowary
Tropical rainforests, mangroves, and adjacent habitat in New Guinea and northeastern Australia.
Song & Call Comparison
House Sparrow
Monotonous series of chirping 'cheep' and 'chirrup' notes. Male gives 'chilp' song repeatedly. Flocks produce constant chirping chatter. No melodic song; purely functional calls.
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
House Sparrow
Native to Europe, Asia, and North Africa. Introduced to every continent except Antarctica, making it the most widely distributed wild bird.
Southern Cassowary
New Guinea, nearby islands, and northeastern Queensland, Australia.
Conservation Status
House Sparrow
Southern Cassowary
How to Tell Them Apart
House Sparrow
Males have grey crowns, chestnut napes, black bibs, and streaked brown backs. Females and juveniles are plain buffy-brown with a pale eyebrow stripe.
Short, stout, conical bill — black in breeding males, yellowish in non-breeding
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
House Sparrow
The house sparrow is perhaps the most successful bird in the world at living alongside humans. Introduced to New York in 1851, it spread across North America within decades. Despite its global abundance, house sparrow populations have declined significantly in parts of western Europe.
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.