Northern Saw-whet Owl vs Great Horned Owl
Aegolius acadicus so với Bubo virginianus
Side-by-Side Comparison
| Thuộc Tính | Northern Saw-whet Owl | Great Horned Owl |
|---|---|---|
| Tên Khoa Học | Aegolius acadicus | Bubo virginianus |
| Bộ | Strigiformes | Strigiformes |
| Họ | Strigidae | Strigidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | 55,0 cm (21.7 in) |
| Chiều Dài Sải Cánh | 27,0 cm (10.6 in) | 127,0 cm (50.0 in) |
| Khối Lượng | 89,75 g (3.17 oz) | 1400,0 g (49.38 oz) |
| Chế Độ Ăn | -- | Extremely diverse — mammals (rabbits, skunks, rodents), birds (including other raptors), reptiles, amphibians, and fish. … |
| Số Trứng | 3-7 | 1-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Northern Saw-whet Owl only
Không
Great Horned Owl only
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.
Song & Call Comparison
Northern Saw-whet Owl
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.
Geographic Range & Migration
Northern Saw-whet Owl
Great Horned Owl
North and South America from subarctic Canada to Tierra del Fuego. One of the most widespread owls in the Americas.
Tình Trạng Bảo Tồn
Northern Saw-whet Owl
Great Horned Owl
How to Tell Them Apart
Northern Saw-whet Owl
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
About These Birds
Northern Saw-whet Owl
The Northern Saw-whet Owl (<em>Aegolius acadicus</em>) is a small nocturnal raptor in the family Strigidae, found across forested and wetland habitats of North America. Detailed plumage and behavioral descriptions beyond nesting parameters are limited in the available data fields, though the species is relatively well studied. It is assessed as Least Concern globally. This species nests in tree cavities, often utilizing old woodpecker holes, and does not excavate its own nest site. Incubation lasts approximately 27 to 29 days, and …
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.