红尾鵟 vs Southern Cassowary
Buteo jamaicensis 对比 Casuarius casuarius
Side-by-Side Comparison
| 属性 | 红尾鵟 | Southern Cassowary |
|---|---|---|
| 学名 | Buteo jamaicensis | Casuarius casuarius |
| 目 | Accipitriformes | Casuariiformes |
| 科 | Accipitridae | Casuariidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 53.0 cm (20.9 in) | 155.0 cm (61.0 in) |
| 翼展 | 124.0 cm (48.8 in) | 60.2 cm (23.7 in) |
| 体重 | 1080.0 g (38.10 oz) | 58000.0 g (2045.89 oz) |
| 食性 | Small to medium mammals, especially voles, mice, and rabbits. Also takes birds, reptiles, and large … | Primarily fallen fruit from the rainforest floor, also fungi, invertebrates, and small vertebrates. A critical … |
| 产卵数 | 2-4 | 3-8 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
红尾鵟
Open country with scattered elevated perches such as trees, poles, and cliffs. Adaptable to farmland, grasslands, roadsides, and suburban areas.
Southern Cassowary
Tropical rainforests, mangroves, and adjacent habitat in New Guinea and northeastern Australia.
Song & Call Comparison
红尾鵟
Iconic, raspy descending scream: 'kreeeeee-ar', often used in films for all raptors. Gives short barking 'kak' notes near nest. Juveniles beg with persistent squealing whistles.
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
红尾鵟
North America from Alaska to Panama, including the Caribbean. One of the most common raptors in North America.
Southern Cassowary
New Guinea, nearby islands, and northeastern Queensland, Australia.
保护状况
红尾鵟
Southern Cassowary
How to Tell Them Apart
红尾鵟
Variable plumage from pale to dark morphs. Most adults have rich brown upperparts, a pale breast with a dark belly band, and the characteristic rufous-red tail.
Dark hooked bill with a yellow cere
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
红尾鵟
The red-tailed hawk is the most widespread and common hawk in North America. Its screaming cry is so iconic that it is often dubbed over bald eagle footage in films and television. These adaptable raptors thrive in human-altered landscapes and are a familiar sight perched along highways.
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.