Great Horned Owl vs Northern Gannet
Bubo virginianus so với Morus bassanus
Side-by-Side Comparison
| Thuộc Tính | Great Horned Owl | Northern Gannet |
|---|---|---|
| Tên Khoa Học | Bubo virginianus | Morus bassanus |
| Bộ | Strigiformes | Suliformes |
| Họ | Strigidae | Sulidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | 55,0 cm (21.7 in) | 93,0 cm (36.6 in) |
| Chiều Dài Sải Cánh | 127,0 cm (50.0 in) | 180,0 cm (70.9 in) |
| Khối Lượng | 1400,0 g (49.38 oz) | 3000,0 g (105.82 oz) |
| Chế Độ Ăn | Extremely diverse — mammals (rabbits, skunks, rodents), birds (including other raptors), reptiles, amphibians, and fish. … | Shoaling fish, especially mackerel, herring, and capelin. Plunge-dives from heights of 30 meters at speeds … |
| Số Trứng | 1-4 | 1 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Môi Trường Sống Chung
Northern Gannet only
Không
Great Horned Owl
Diverse habitats including forests, deserts, swamps, urban parks, and suburban areas. Nests in tree hollows, cliff ledges, and abandoned nests of other large birds.
Northern Gannet
Open ocean and coastal waters. Breeds in dense colonies on steep rocky islands and sea stacks.
Song & Call Comparison
Great Horned Owl
Deep, resonant 'who-who-who-who-ooo': the classic 'hoo-h'HOO-hoo-hoo' territorial duet of a mated pair. Booms at dusk. Female pitch slightly higher than male.
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
Great Horned Owl
North and South America from subarctic Canada to Tierra del Fuego. One of the most widespread owls in the Americas.
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
Great Horned Owl
Northern Gannet
How to Tell Them Apart
Great Horned Owl
Mottled grey-brown plumage with heavy dark barring. Prominent ear tufts, yellow eyes, and a white throat patch give a fierce expression.
Dark grey-black hooked bill almost hidden by facial disc feathers
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
Great Horned Owl
The great horned owl is the most powerful and widespread owl in the Americas, earning the nickname tiger of the sky. It is one of the earliest nesting birds, often laying eggs in January when snow still covers the ground. Great horned owls are fierce predators, regularly taking prey up to three times their own weight.
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.