Common Kestrel vs Northern Gannet
Falco tinnunculus so với Morus bassanus
Side-by-Side Comparison
| Thuộc Tính | Common Kestrel | Northern Gannet |
|---|---|---|
| Tên Khoa Học | Falco tinnunculus | Morus bassanus |
| Bộ | Falconiformes | Suliformes |
| Họ | Falconidae | Sulidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | 34,0 cm (13.4 in) | 93,0 cm (36.6 in) |
| Chiều Dài Sải Cánh | 74,0 cm (29.1 in) | 180,0 cm (70.9 in) |
| Khối Lượng | 190,0 g (6.70 oz) | 3000,0 g (105.82 oz) |
| Chế Độ Ăn | Primarily voles and mice, also lizards, large insects, and small birds. Hunts by hovering at … | Shoaling fish, especially mackerel, herring, and capelin. Plunge-dives from heights of 30 meters at speeds … |
| Số Trứng | 1-7 | 1 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Môi Trường Sống Chung
Common Kestrel only
Northern Gannet only
Không
Common Kestrel
Open country including farmland, grasslands, moorland, and urban areas. Common along motorways and in cities across Europe.
Northern Gannet
Open ocean and coastal waters. Breeds in dense colonies on steep rocky islands and sea stacks.
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.
Northern Gannet
Loud, harsh 'urrah-urrah' grunting and croaking at breeding colonies on sea stacks. Also gives a softer 'karrr' in flight. Large colonies are extremely noisy during the breeding season.
Geographic Range & Migration
Common Kestrel
Europe, Asia, and Africa. One of the most common and widespread raptors in the Old World.
Northern Gannet
North Atlantic, breeding from Newfoundland and Gulf of St. Lawrence to Norway, Iceland, and Britain. Winters at sea south to the tropics.
Tình Trạng Bảo Tồn
Common Kestrel
Northern Gannet
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
Northern Gannet
Brilliant white body with black wingtips and a golden-yellow wash on the head and nape. Blue-grey bill with dark lines and pale blue eye-ring.
Long, straight, pointed, pale blue-grey bill with serrated edges
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.
Northern Gannet
The northern gannet is a spectacular plunge-diver, folding its two-meter wingspan into an arrow shape to hit the water at up to 100 km/h. Air sacs under the skin and a reinforced skull protect it from the impact. Bass Rock in Scotland hosts over 150,000 gannets, the largest single colony of any seabird in the world.