Barn Owl vs Eastern Bluebird
Tyto alba 对比 Sialia sialis
Side-by-Side Comparison
| 属性 | Barn Owl | Eastern Bluebird |
|---|---|---|
| 学名 | Tyto alba | Sialia sialis |
| 目 | Strigiformes | Passeriformes |
| 科 | Tytonidae | Turdidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 35.0 cm (13.8 in) | 17.5 cm (6.9 in) |
| 翼展 | 90.0 cm (35.4 in) | 27.0 cm (10.6 in) |
| 体重 | 350.0 g (12.35 oz) | 31.0 g (1.09 oz) |
| 食性 | Almost exclusively small mammals, especially voles and mice. Hunts using extraordinary hearing to locate prey … | Insects in summer, berries in winter. Hunts from low perches, dropping to the ground to … |
| 产卵数 | 2-16 | 4-5 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Barn Owl
Open farmland, grasslands, and marshes. Nests in barns, church steeples, tree cavities, and purpose-built nest boxes.
Eastern Bluebird
Open woodland, farmland edges, orchards, and parks with scattered trees and open ground. Readily uses nest boxes.
Song & Call Comparison
Barn Owl
An eerie, drawn-out rasping shriek 'shreeeeee' — not a hoot. Also gives hissing, snoring, and bill-snapping when disturbed. Chicks call with a persistent rasping hunger call.
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.
Geographic Range & Migration
Barn Owl
The most widespread owl and one of the most widespread land birds, found on every continent except Antarctica.
Eastern Bluebird
Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.
保护状况
Barn Owl
Eastern Bluebird
How to Tell Them Apart
Barn Owl
Pale golden-buff upperparts with delicate grey mottling. Pure white heart-shaped face and white to pale buff underparts. Ghostly white appearance in flight.
Pale pinkish hooked bill nearly concealed by the facial disc
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
About These Birds
Barn Owl
The barn owl has the most asymmetrical ears of any owl, giving it the finest auditory localization ability in the animal kingdom. It can catch prey in complete darkness using sound alone. The barn owl's distinctive heart-shaped face acts as a parabolic dish, funneling sound to its offset ears.
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。