Bermuda Saw-whet Owl vs Great Horned Owl
Aegolius gradyi เปรียบเทียบกับ Bubo virginianus
Side-by-Side Comparison
| คุณสมบัติ | Bermuda Saw-whet Owl | Great Horned Owl |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Aegolius gradyi | Bubo virginianus |
| อันดับ | Strigiformes | Strigiformes |
| วงศ์ตระกูล | Strigidae | Strigidae |
| สถานะการอนุรักษ์ | Extinct | Least Concern |
| ความยาว | — | 55.0 cm (21.7 in) |
| กว้างปีก | — | 127.0 cm (50.0 in) |
| น้ำหนัก | — | 1400.0 g (49.38 oz) |
| อาหาร | -- | Extremely diverse — mammals (rabbits, skunks, rodents), birds (including other raptors), reptiles, amphibians, and fish. … |
| จำนวนไข่ | -- | 1-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
ถิ่นที่อยู่อาศัยร่วมกัน
Bermuda Saw-whet Owl only
ไม่มี
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
Bermuda 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
Bermuda 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.
สถานะการอนุรักษ์
Bermuda Saw-whet Owl
Great Horned Owl
How to Tell Them Apart
Bermuda 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
Bermuda Saw-whet Owl
The Bermuda Saw-whet Owl was a small owl endemic to Bermuda that became extinct in the 17th century. It is known only from fossil bones and was likely a colonist from the North American Saw-whet Owl that evolved in island isolation. Its extinction was driven by human settlement, habitat clearance, and introduced predators.
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.