American Crow vs Common Kestrel
Corvus brachyrhynchos so với Falco tinnunculus
Side-by-Side Comparison
| Thuộc Tính | American Crow | Common Kestrel |
|---|---|---|
| Tên Khoa Học | Corvus brachyrhynchos | Falco tinnunculus |
| Bộ | Passeriformes | Falconiformes |
| Họ | Corvidae | Falconidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | 45,0 cm (17.7 in) | 34,0 cm (13.4 in) |
| Chiều Dài Sải Cánh | 99,0 cm (39.0 in) | 74,0 cm (29.1 in) |
| Khối Lượng | 450,0 g (15.87 oz) | 190,0 g (6.70 oz) |
| Chế Độ Ăn | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | Primarily voles and mice, also lizards, large insects, and small birds. Hunts by hovering at … |
| Số Trứng | 3-7 | 1-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Môi Trường Sống Chung
American Crow only
Common Kestrel only
American Crow
Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.
Common Kestrel
Open country including farmland, grasslands, moorland, and urban areas. Common along motorways and in cities across Europe.
Song & Call Comparison
American Crow
Classic 'caw-caw-caw' repeated in series. Family groups use distinct dialects. Also gives rattling, knocking, and a short 'cah' flight call. Highly social and vocal.
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.
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
Common Kestrel
Europe, Asia, and Africa. One of the most common and widespread raptors in the Old World.
Tình Trạng Bảo Tồn
American Crow
Common Kestrel
How to Tell Them Apart
American Crow
All black with a slight glossy sheen. Squared-off tail and smooth throat distinguish it from the common raven.
Straight, sturdy black bill smaller than a raven's
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
About These Birds
American Crow
The American crow is one of North America's most familiar and intelligent birds. Research has shown they can recognize individual human faces and communicate perceived threats to other crows. They form large winter roosts of up to hundreds of thousands of individuals in some cities.
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.