Common Ostrich vs Southern Cassowary
Struthio camelus comparado com Casuarius casuarius
Side-by-Side Comparison
| Atributo | Common Ostrich | Southern Cassowary |
|---|---|---|
| Nome científico | Struthio camelus | Casuarius casuarius |
| Ordem | Struthioniformes | Casuariiformes |
| Família | Struthionidae | Casuariidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | 210,0 cm (82.7 in) | 155,0 cm (61.0 in) |
| Envergadura | 200,0 cm (78.7 in) | 60,2 cm (23.7 in) |
| Peso | 100000,0 g (3527.40 oz) | 58000,0 g (2045.89 oz) |
| Dieta | Omnivorous — plants, seeds, roots, flowers, insects, and small vertebrates. Swallows pebbles to aid digestion … | Primarily fallen fruit from the rainforest floor, also fungi, invertebrates, and small vertebrates. A critical … |
| Tamanho da postura | 2-11 | 3-8 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Common Ostrich
Open arid and semi-arid habitats including savannas, Sahel, and dry woodlands across Africa.
Southern Cassowary
Tropical rainforests, mangroves, and adjacent habitat in New Guinea and northeastern Australia.
Song & Call Comparison
Common Ostrich
Male produces a surprisingly deep, resonant booming roar — remarkably lion-like. Also gives whistling and hissing sounds. Females and chicks emit softer grunts and squeaks.
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
Common Ostrich
Sub-Saharan Africa. Formerly also found in the Middle East and parts of Asia. Farmed worldwide.
Southern Cassowary
New Guinea, nearby islands, and northeastern Queensland, Australia.
Estado de conservação
Common Ostrich
Southern Cassowary
How to Tell Them Apart
Common Ostrich
Males have black body plumage with white wing and tail feathers. Females and immatures are grey-brown. Bare skin on the neck and thighs varies from pink to blue.
Broad, flat bill adapted for an omnivorous diet
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
Common Ostrich
The common ostrich is the world's largest living bird, standing up to 2.7 meters tall and weighing up to 145 kg. Despite being flightless, it is the fastest bird on land, sprinting at speeds up to 70 km/h. Ostrich eggs are the largest of any living bird, weighing about 1.4 kg each.
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.