Eastern Bluebird vs Great Horned Owl
Sialia sialis 对比 Bubo virginianus
Side-by-Side Comparison
| 属性 | Eastern Bluebird | Great Horned Owl |
|---|---|---|
| 学名 | Sialia sialis | Bubo virginianus |
| 目 | Passeriformes | Strigiformes |
| 科 | Turdidae | Strigidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 17.5 cm (6.9 in) | 55.0 cm (21.7 in) |
| 翼展 | 27.0 cm (10.6 in) | 127.0 cm (50.0 in) |
| 体重 | 31.0 g (1.09 oz) | 1400.0 g (49.38 oz) |
| 食性 | Insects in summer, berries in winter. Hunts from low perches, dropping to the ground to … | Extremely diverse — mammals (rabbits, skunks, rodents), birds (including other raptors), reptiles, amphibians, and fish. … |
| 产卵数 | 4-5 | 1-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
共同栖息地
无
Eastern Bluebird only
Great Horned Owl only
Eastern Bluebird
Open woodland, farmland edges, orchards, and parks with scattered trees and open ground. Readily uses nest boxes.
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
Eastern Bluebird
A rich, melodious warbled 'chur-wi, tur-a-lee' song. Both sexes sing. Call is a soft, musical 'turee'. Song is gentle and flute-like, suggesting a small thrush. Given from exposed perch.
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
Eastern Bluebird
Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.
Great Horned Owl
North and South America from subarctic Canada to Tierra del Fuego. One of the most widespread owls in the Americas.
保护状况
Eastern Bluebird
Great Horned Owl
How to Tell Them Apart
Eastern Bluebird
Males are vivid royal blue above with a rusty-red breast and white belly. Females are grey-blue with a paler rust breast.
Short, thin, dark bill
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
Eastern Bluebird
北美幸福的象征。通过安装巢箱使种群得以恢复。冬季形成松散群体。
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.