Eastern Bluebird vs 红尾鵟
Sialia sialis 对比 Buteo jamaicensis
Side-by-Side Comparison
| 属性 | Eastern Bluebird | 红尾鵟 |
|---|---|---|
| 学名 | Sialia sialis | Buteo jamaicensis |
| 目 | Passeriformes | Accipitriformes |
| 科 | Turdidae | Accipitridae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 17.5 cm (6.9 in) | 53.0 cm (20.9 in) |
| 翼展 | 27.0 cm (10.6 in) | 124.0 cm (48.8 in) |
| 体重 | 31.0 g (1.09 oz) | 1080.0 g (38.10 oz) |
| 食性 | Insects in summer, berries in winter. Hunts from low perches, dropping to the ground to … | Small to medium mammals, especially voles, mice, and rabbits. Also takes birds, reptiles, and large … |
| 产卵数 | 4-5 | 2-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Eastern Bluebird
Open woodland, farmland edges, orchards, and parks with scattered trees and open ground. Readily uses nest boxes.
红尾鵟
Open country with scattered elevated perches such as trees, poles, and cliffs. Adaptable to farmland, grasslands, roadsides, and suburban areas.
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.
红尾鵟
Iconic, raspy descending scream: 'kreeeeee-ar', often used in films for all raptors. Gives short barking 'kak' notes near nest. Juveniles beg with persistent squealing whistles.
Geographic Range & Migration
Eastern Bluebird
Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.
红尾鵟
North America from Alaska to Panama, including the Caribbean. One of the most common raptors in North America.
保护状况
Eastern Bluebird
红尾鵟
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
红尾鵟
Variable plumage from pale to dark morphs. Most adults have rich brown upperparts, a pale breast with a dark belly band, and the characteristic rufous-red tail.
Dark hooked bill with a yellow cere
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。
红尾鵟
The red-tailed hawk is the most widespread and common hawk in North America. Its screaming cry is so iconic that it is often dubbed over bald eagle footage in films and television. These adaptable raptors thrive in human-altered landscapes and are a familiar sight perched along highways.