Northern Cassowary vs Southern Cassowary
Casuarius unappendiculatus comparé à Casuarius casuarius
Side-by-Side Comparison
| Attribut | Northern Cassowary | Southern Cassowary |
|---|---|---|
| Nom scientifique | Casuarius unappendiculatus | Casuarius casuarius |
| Ordre | Casuariiformes | Casuariiformes |
| Famille | Casuariidae | Casuariidae |
| Statut de conservation | Least Concern | Least Concern |
| Longueur | — | 155,0 cm (61.0 in) |
| Envergure | 52,9 cm (20.8 in) | 60,2 cm (23.7 in) |
| Poids | 46993,25 g (1657.64 oz) | 58000,0 g (2045.89 oz) |
| Régime alimentaire | Eats seeds, fruits, leaves, and insects across South American grasslands; forages on the ground in … | Primarily fallen fruit from the rainforest floor, also fungi, invertebrates, and small vertebrates. A critical … |
| Taille de la couvée | 3-5 | 3-8 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Northern Cassowary
Lowland and foothill rainforest, swamp forest edges, and secondary growth up to 600 m in northern and western New Guinea. Forages along forest streams and near fruiting trees. Avoids heavily disturbed areas.
Southern Cassowary
Tropical rainforests, mangroves, and adjacent habitat in New Guinea and northeastern Australia.
Song & Call Comparison
Northern Cassowary
Deep, resonant booming calls and guttural rumbles from males during breeding season. Hissing threat displays when approached. Less studied than Southern Cassowary but similar pattern.
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
Northern Cassowary
Widespread in South American forests and grasslands from Venezuela south to Argentina. Largely sedentary; some local seasonal movements.
Southern Cassowary
New Guinea, nearby islands, and northeastern Queensland, Australia.
Statut de conservation
Northern Cassowary
Southern Cassowary
How to Tell Them Apart
Northern Cassowary
Body covered in coarse, glossy black feathers. Bare neck and head skin vivid blue and red. Single-wattled with a prominent yellow-orange casque. Bare red skin on nape. Sexes similar in …
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
Northern Cassowary
A large flightless bird of lowland New Guinea with a tall orange-yellow casque, bare blue-and-red neck skin, and one long pendant wattle. Solitary and aggressive when threatened. Feeds mainly on fallen fruit, dispersing large seeds across the forest. One of the world's most powerful kickers.
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.