Eastern Bluebird vs Búteo-de-cauda-vermelha
Sialia sialis comparado com Buteo jamaicensis
Side-by-Side Comparison
| Atributo | Eastern Bluebird | Búteo-de-cauda-vermelha |
|---|---|---|
| Nome científico | Sialia sialis | Buteo jamaicensis |
| Ordem | Passeriformes | Accipitriformes |
| Família | Turdidae | Accipitridae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | 17,5 cm (6.9 in) | 53,0 cm (20.9 in) |
| Envergadura | 27,0 cm (10.6 in) | 124,0 cm (48.8 in) |
| Peso | 31,0 g (1.09 oz) | 1080,0 g (38.10 oz) |
| Dieta | 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 … |
| Tamanho da postura | 4-5 | 2-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Habitats partilhados
Eastern Bluebird only
Nenhum
Búteo-de-cauda-vermelha only
Eastern Bluebird
Open woodland, farmland edges, orchards, and parks with scattered trees and open ground. Readily uses nest boxes.
Búteo-de-cauda-vermelha
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.
Búteo-de-cauda-vermelha
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.
Búteo-de-cauda-vermelha
North America from Alaska to Panama, including the Caribbean. One of the most common raptors in North America.
Estado de conservação
Eastern Bluebird
Búteo-de-cauda-vermelha
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
Búteo-de-cauda-vermelha
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
The eastern bluebird is a beloved symbol of happiness in North America. Once declining due to habitat loss and competition from introduced species, populations recovered dramatically thanks to a massive citizen science nest box campaign. These gentle thrushes form loose winter flocks and huddle together in nest boxes during cold snaps.
Búteo-de-cauda-vermelha
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.