Common Kestrel vs Southern Cassowary
Falco tinnunculus в сравнении с Casuarius casuarius
Side-by-Side Comparison
| Характеристика | Common Kestrel | Southern Cassowary |
|---|---|---|
| Научное название | Falco tinnunculus | Casuarius casuarius |
| Отряд | Falconiformes | Casuariiformes |
| Семейство | Falconidae | Casuariidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | 34,0 cm (13.4 in) | 155,0 cm (61.0 in) |
| Размах крыльев | 74,0 cm (29.1 in) | 60,2 cm (23.7 in) |
| Масса | 190,0 g (6.70 oz) | 58000,0 g (2045.89 oz) |
| Питание | Primarily voles and mice, also lizards, large insects, and small birds. Hunts by hovering at … | Primarily fallen fruit from the rainforest floor, also fungi, invertebrates, and small vertebrates. A critical … |
| Размер кладки | 1-7 | 3-8 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Общие среды обитания
Нет
Common Kestrel only
Southern Cassowary only
Common Kestrel
Open country including farmland, grasslands, moorland, and urban areas. Common along motorways and in cities across Europe.
Southern Cassowary
Tropical rainforests, mangroves, and adjacent habitat in New Guinea and northeastern Australia.
Song & Call Comparison
Common Kestrel
A shrill, repeated 'kee-kee-kee-kee' or 'kik-ik-ik', especially near nest. Alarm call is a nasal chattering. Generally less vocal than larger falcons. Calls ring clearly in open country.
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 Kestrel
Europe, Asia, and Africa. One of the most common and widespread raptors in the Old World.
Southern Cassowary
New Guinea, nearby islands, and northeastern Queensland, Australia.
Охранный статус
Common Kestrel
Southern Cassowary
How to Tell Them Apart
Common Kestrel
Males have a blue-grey head and tail with a rufous back spotted with black. Females are rufous-brown with heavy barring. Both have a dark moustachial stripe.
Short, hooked grey 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
Common Kestrel
The common kestrel is Europe's most abundant falcon, famous for its ability to hover motionless in the wind while scanning for prey. Research has shown kestrels can see ultraviolet light, allowing them to detect vole urine trails that reflect UV. The species has adapted remarkably well to urban environments.
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.